AIR INLET AND EXHAUST SYSTEM
TURBOCHARGER GPHYDRAULIC SYSTEM
PUMP GPAIR INLET AND EXHAUST SYSTEM
MANIFOLD GP-EXHAUSTEXHAUST GP
AIR INLET AND EXHAUST SYSTEM
TURBOCHARGER GP#UEG0315S0040
1P-1163: TURBOCHARGER GP
1P1163 TURBOCHARGER ASSEMBLY (3S2341 N/S)--Type 1
Serial No. 46A24433 to 28403, 28407, 28410, 28413, and 46A28420 to 46A28424 inclusive
Serial No. 46A24433 to 28403, 28407, 28410, 28413, and 46A28420 to 46A28424 inclusive
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1P-1162 R | [1] | CARTRIDGE ASSEM. | ||
(Includes All Parts Except Those Marked H & J) | ||||
1. | 3S-4484 L | [1] | NUT | |
2. | 1P-1161 | [1] | WHEEL | |
3. | 9S-2609 J | [1] | HOUSING ASSEM. (compressor) | |
4. | 3S-5135 L | [1] | SEAL | |
5. | 3S-5129 J | [1] | CLAMP | |
6. | 8S-5169 R | [1] | PLATE ASSEM. | |
7. | 9M-8919 L | [2] | RING | |
8. | 8S-8042 | [1] | COLLAR | |
3S-5126 J | [6] | BOLT | ||
9. | 3S-5127 J | [3] | PLATE (clamp) | |
3S-5128 J | [3] | PLATE (lock) | ||
10. | 9M-8916 C | [2] | BEARING | |
11. | 9S-9327 | [1] | SHROUD | |
12. | 9S-2608 RJ | [1] | HOUSING (turbine) | |
13. | 9M-8915 L | [3] | RING | |
14. | 9S-8012 | [1] | RING | |
15. | 8S-5167 R | [1] | SHAFT AND WHEEL ASSEM. | |
8S-8097 J | [1] | NAMEPLATE | ||
16. | 8S-8096 | [1] | NAMEPLATE | |
2F-0808 | [2] | SCREW | ||
17. | 9L-2295 H | [4] | BOLT | |
18. | 8M-2296 H | [4] | NUT | |
19. | 1S-4295 H | [1] | GASKET | |
20. | 4S-9702 | [1] | HOUSING ASSEM. (center) | |
(Includes) | ||||
4M-6646 C | [2] | PIN | ||
21. | 6N-5004 CL | [1] | BEARING | |
22. | 8S-8043 L | [1] | SPACER | |
23. | 3S-4489 | [1] | SEAL | |
24. | 3S-4488 L | [3] | SCREW | |
25. | 3S-4487 L | [3] | PLATE | |
THE FOLLOWING REPAIR KITS ARE AVAILABLE: | ||||
6N-7239 C | [1] | KIT (cartridge) | ||
(Includes parts marked L) | ||||
9N-2041 L | [1] | KIT (bearing) | ||
C | INDICATES CHANGE | |||
R | REMFG PART MAY BE AVAILABLE | |||
H | NOT PART OF 1P1163 TURBOCHARGE |
#UEG0315S0041
1P-1163: TURBOCHARGER GP
1P1163 TURBOCHARGER ASSEMBLY (3S2341 N/S)--Type 2
Serial No. 46A24433 to 28403, 28407, 28410, 28413 and 46A28420 to 46A28424 inclusive
7N7251 Cartridge parts are shown on Page 20A-2
Serial No. 46A24433 to 28403, 28407, 28410, 28413 and 46A28420 to 46A28424 inclusive
7N7251 Cartridge parts are shown on Page 20A-2
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 9S-2609 | [1] | HOUSING ASSEM. (compressor) | |
2. | 3S-5126 | [6] | BOLT | |
3. | 3S-5128 | [3] | PLATE (large) | |
4. | 9S-2608 R | [1] | HOUSING (turbine) | |
5. | 3S-5127 | [3] | PLATE (small) | |
6. | 8S-8097 | [1] | NAMEPLATE | |
2F-0808 C | [2] | SCREW | ||
7. | 7N-7251 RYC | [1] | CARTRIDGE GROUP | |
(Separate Illustration) | ||||
8. | 3S-5129 | [1] | CLAMP | |
(Includes) | ||||
7M-9918 | [1] | NUT | ||
R | REMFG PART MAY BE AVAILABLE | |||
Y | SEPARATE ILLUSTRATION | |||
C | INDICATES CHANGE |
#UEG0315S0042
4N-4441: TURBOCHARGER GP
4N4441 TURBOCHARGER GROUP (3S2341 N/S)--Type 1
Serial No. 46A28404 to 28406, 28408, 28409, 28411, 28412, 28414 to 28419 and 46A28425-Up
Serial No. 46A28404 to 28406, 28408, 28409, 28411, 28412, 28414 to 28419 and 46A28425-Up
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 3S-4484 L | [1] | NUT | |
2. | 1P-1161 | [1] | WHEEL | |
3. | 9S-2609 J | [1] | HOUSING ASSEM. (Compressor) | |
4. | 3S-5135 L | [1] | SEAL | |
5. | 3S-5129 J | [1] | CLAMP | |
6. | 8S-5169 R | [1] | PLATE ASSEM. | |
7. | 9M-8919 L | [2] | RING | |
8. | 8S-8042 | [1] | COLLAR | |
3S-5126 J | [6] | BOLT | ||
9. | 3S-5127 J | [3] | PLATE | |
3S-5128 J | [3] | PLATE | ||
10. | 9M-8916 | [2] | BEARING | |
11. | 9S-9327 | [1] | SHROUD | |
12. | 8S-5165 RJ | [1] | HOUSING (turbine) | |
13. | 9M-8915 L | [3] | RING | |
14. | 9S-8012 | [1] | RING | |
15. | 8S-5167 R | [1] | SHAFT AND WHEEL ASSEM. | |
8S-8097 J | [1] | NAMEPLATE | ||
16. | [1] | NAMEPLATE | ||
2F-0808 | [2] | SCREW | ||
17. | 9L-2295 H | [4] | BOLT | |
18. | 8M-2296 H | [4] | NUT | |
19. | 1S-4295 H | [1] | GASKET | |
20. | 3S-4487 L | [3] | PLATE | |
21. | 6N-5004 CL | [1] | BEARING | |
22. | 8S-8043 L | [1] | SPACER | |
23. | 3S-4489 | [1] | SEAL | |
24. | 3S-4488 L | [3] | SCREW | |
25. | 4S-9702 | [1] | HOUSING ASSEM. | |
(Includes) | ||||
26. | 4M-6646 C | [2] | PIN | |
THE FOLLOWING REPAIR KITS ARE AVAILABLE: | ||||
6N-7239 C | [1] | KIT (cartridge) | ||
(Includes Parts Marked L) | ||||
9N-2041 L | [1] | KIT (bearing) | ||
1P-1162 R | [1] | CARTRIDGE ASSEM. | ||
(Consists of all parts shown except those marked H and J) | ||||
H | NOT PART OF 4N4441 TURBOCHARGE | |||
R | REMFG PART MAY BE AVAILABLE | |||
C | INDICATES CHANGE |
#UEG0315S0043
4N-4441: TURBOCHARGER GP
4N4441 TURBOCHARGER GROUP (3S2341 N/S)--Type 2
Serial No. 46A28404 to 28406, 28408, 28409, 28411, 28412, 28414 to 28419
and 46A28425-Up 7N7251 Cartridge parts are shown on Page 20A-2
Serial No. 46A28404 to 28406, 28408, 28409, 28411, 28412, 28414 to 28419
and 46A28425-Up 7N7251 Cartridge parts are shown on Page 20A-2
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 9S-2609 | [1] | HOUSING ASSEM. (compressor) | |
2. | 3S-5126 | [6] | BOLT | |
3. | 3S-5128 | [3] | PLATE (lock) | |
4. | 8S-5165 R | [1] | HOUSING (turbine) | |
5. | 3S-5127 | [3] | PLATE | |
6. | 8S-8097 | [1] | NAMEPLATE | |
2F-0808 | [2] | SCREW | ||
7. | 7N-7251 RYC | [1] | CARTRIDGE GROUP | |
(Separate Illustration) | ||||
8. | 3S-5129 | [1] | CLAMP | |
(Includes) | ||||
7M-9918 | [1] | NUT | ||
R | REMFG PART MAY BE AVAILABLE | |||
Y | SEPARATE ILLUSTRATION | |||
C | INDICATES CHANGE |
#UEG0315S0044
7N-7251: CARTRIDGE AS
7N7251 CARTRIDGE GROUP
Part of 1P1163 and 4N4441 Turbocharger Groups shown on Pages 20-1 and 20A
Part of 1P1163 and 4N4441 Turbocharger Groups shown on Pages 20-1 and 20A
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 3S-4484 J | [1] | NUT | |
2. | 1P-1161 | [1] | WHEEL | |
3. | 9M-8919 J | [2] | RING | |
4. | 5P-5756 J | [1] | SEAL | |
5. | 3S-5135 J | [1] | SEAL | |
6. | 8S-8042 | [1] | COLLAR | |
7. | 7N-3760 | [1] | SHROUD | |
8. | 8S-5167 R | [1] | SHAFT AND WHEEL ASSEM. | |
9. | 7N-3759 J | [1] | RING | |
10. | 9M-8915 | [3] | RING | |
11. | 7N-7252 R | [1] | HOUSING ASSEM. | |
(Includes) | ||||
4M-6646 | [2] | PIN | ||
12. | 6N-5004 J | [1] | BEARING | |
13. | 8S-5169 R | [1] | PLATE ASSEM. | |
14. | 3S-4488 J | [3] | SCREW | |
3S-4487 J | [3] | PLATE | ||
15. | 8S-8043 | [1] | SPACER | |
8S-8096 H | [1] | PLATE (name) | ||
2F-0808 H | [2] | SCREW | ||
THE FOLLOWING REPAIR KITS ARE AVAILABLE: | ||||
6N-7239 | [1] | KIT (cartridge) | ||
(Includes Parts Marked j) | ||||
9N-2041 J | [1] | KIT (bearing) | ||
H | NOT SHOWN-MOUNTED ON CARTRIDGE | |||
R | REMFG PART MAY BE AVAILABLE |
#UEG0315S0045
9S-2370: MANIFOLDS
MANIFOLDS (9S2370 N/S)
Serial No. 46A28818 to 46A29658 inclusive
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Serial No. 46A28818 to 46A29658 inclusive
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 5L-8855 | [1] | RING | |
2. | 6L-8968 | [1] | COUPLING | |
3. | 5L-8854 | [1] | RING | |
4. | 8S-4687 C | [1] | ELBOW | |
5. | 8H-5324 | [6] | GASKET | |
6. | 3S-2252 | [1] | MANIFOLD | |
7. | 1B-5357 | [12] | NUT | |
8. | 5H-2711 | [1] | COVER | |
5H-2712 | [1] | GASKET | ||
9. | 0S-1594 | [4] | BOLT | |
3B-4506 | [4] | LOCKWASHER | ||
10. | 8S-9089 | [2] | BOLT | |
11. | 3B-4508 C | [20] | LOCKWASHER | |
12. | 1M-6034 | [1] | MANIFOLD | |
13. | 1A-5822 | [11] | BOLT | |
14. | 1D-4569 C | [3] | BOLT | |
15. | 6H-1871 | [2] | SEAL | |
16. | 3H-3301 | [1] | GASKET | |
17. | 0S-1585 | [1] | BOLT (1.50 in. long) | |
18. | 0S-1595 | [3] | BOLT (1.25 in. long) | |
19. | 4S-6454 | [1] | MANIFOLD | |
20. | 8H-3190 | [6] | GASKET | |
21. | 6H-5852 | [1] | COVER | |
4M-5469 | [1] | GASKET | ||
22. | 2S-7268 | [1] | MANIFOLD | |
23. | 5S-1236 | [1] | PIPE ASSEM. | |
5M-6214 | [2] | PLUG | ||
24. | 2S-9874 | [2] | RING | |
25. | 4L-8337 | [2] | SEAL | |
26. | 0S-1571 | [4] | BOLT | |
1B-5355 | [4] | NUT | ||
C | INDICATES CHANGE |
#UEG0315S0046
9S-2370: MANIFOLDS
MANIFOLDS (9S2370 N/S)
Serial No. 46A29659 to 46A31760, 31762 to 31765 and 46A31767 inclusive
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Serial No. 46A29659 to 46A31760, 31762 to 31765 and 46A31767 inclusive
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 5L-8855 | [1] | RING | |
2. | 6L-8968 | [1] | COUPLING | |
3. | 5L-8854 | [1] | RING | |
4. | 2P-4726 C | [1] | ELBOW | |
5. | 8H-5324 | [6] | GASKET | |
6. | 3S-2252 | [1] | MANIFOLD | |
7. | 1B-5357 | [12] | NUT | |
8. | 5H-2711 | [1] | COVER | |
5H-2712 | [1] | GASKET | ||
9. | 0S-1594 | [4] | BOLT | |
3B-4506 | [4] | LOCKWASHER | ||
10. | 8S-9089 | [2] | BOLT | |
11. | 3B-4508 C | [20] | LOCKWASHER | |
12. | 1M-6034 | [1] | MANIFOLD | |
13. | 1A-5822 | [11] | BOLT | |
14. | 1D-4569 C | [3] | BOLT | |
15. | 6H-1871 | [2] | SEAL | |
16. | 3H-3301 | [1] | GASKET | |
17. | 0S-1585 | [1] | BOLT (1.50 in. long) | |
18. | 0S-1595 | [3] | BOLT (1.25 in. long) | |
19. | 4S-6454 | [1] | MANIFOLD | |
20. | 8H-3190 | [6] | GASKET | |
21. | 6H-5852 | [1] | COVER | |
4M-5469 | [1] | GASKET | ||
22. | 2S-7268 | [1] | MANIFOLD | |
23. | 5S-1236 | [1] | PIPE ASSEM. | |
5M-6214 | [2] | PLUG | ||
24. | 2S-9874 | [2] | RING | |
25. | 4L-8337 | [2] | SEAL | |
26. | 0S-1571 | [4] | BOLT | |
27. | 1B-5355 C | [10] | NUT | |
28. | 0L-1143 C | [2] | BOLT | |
29. | 2P-4727 C | [1] | PIPE | |
30. | 2P-4729 C | [1] | ELBOW | |
31. | 0S-1591 C | [4] | BOLT | |
C | INDICATES CHANGE |
#UEG0315S0047
9S-2370: MANIFOLDS
MANIFOLDS (9S2370 N/S)
Serial No. 46A31761, 46A31766 and 46A31768 to 46A33756 inclusive
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Serial No. 46A31761, 46A31766 and 46A31768 to 46A33756 inclusive
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 2S-7268 | [1] | MANIFOLD | |
2. | 5S-1236 | [1] | PIPE ASSEM. | |
(Includes) | ||||
5M-6214 | [2] | PLUG | ||
3. | 2S-9874 | [2] | RING | |
4. | 4L-8337 | [2] | SEAL | |
5. | 8H-5324 | [6] | GASKET | |
6. | 3S-2252 | [1] | MANIFOLD | |
7. | 1B-5357 | [12] | NUT | |
8. | 5H-2711 | [1] | COVER | |
5H-2712 | [1] | GASKET | ||
9. | 0S-1594 | [4] | BOLT | |
3B-4506 | [4] | LOCKWASHER | ||
10. | 8S-9089 | [2] | BOLT | |
11. | 3B-4508 | [20] | LOCKWASHER | |
12. | 1M-6034 | [1] | MANIFOLD | |
13. | 1A-5822 | [11] | BOLT | |
14. | 1D-4569 | [3] | BOLT | |
15. | 6H-1871 | [2] | SEAL | |
16. | 3H-3301 | [1] | GASKET | |
17. | 0S-1585 | [1] | BOLT (1.50 in. long) | |
18. | 0S-1595 | [3] | BOLT (1.25 in. long) | |
19. | 4S-6454 | [1] | MANIFOLD | |
20. | 8H-3190 | [6] | GASKET | |
21. | 6H-5852 | [1] | COVER | |
4M-5469 | [1] | GASKET |
#UEG0315S0048
9S-2370: MANIFOLDS
MANIFOLDS (9S2370 N/S)
Serial No. 46A33757-Up
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Serial No. 46A33757-Up
Note: 7S5003 Rain Cap Assembly is available. Refer also to Page 177 for special parts
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
1. | 2S-7268 | [1] | MANIFOLD | |
2. | 1B-5357 | [12] | NUT | |
3. | 1A-5822 | [11] | BOLT | |
4. | 3B-4508 C | [24] | LOCKWASHER | |
5. | 5M-6214 C | [3] | PLUG | |
6. | 2S-9874 | [2] | RING | |
7. | 4L-8337 | [2] | SEAL | |
8. | 4N-9926 C | [1] | PIPE | |
9. | 3S-2252 | [1] | MANIFOLD | |
10. | 8H-5324 | [6] | GASKET | |
11. | 4N-9928 C | [1] | MANIFOLD | |
13. | 8S-9089 | [2] | BOLT | |
14. | 8H-8754 C | [1] | GASKET | |
15. | 0S-1585 C | [5] | BOLT | |
16. | 6H-1871 | [2] | SEAL | |
17. | 4N-9927 C | [1] | ELBOW | |
18. | 2B-2006 C | [1] | BOLT | |
19. | 3H-3301 | [1] | GASKET | |
20. | 0S-1595 | [3] | BOLT | |
21. | 4S-6454 | [1] | MANIFOLD | |
22. | 1D-4569 | [2] | BOLT | |
23. | 8H-3190 | [6] | GASKET | |
24. | 0S-1594 | [2] | BOLT | |
3B-4506 | [2] | LOCKWASHER | ||
25. | 6H-5852 | [1] | COVER | |
26. | 4M-5469 | [1] | GASKET | |
C | INDICATES CHANGE |
#UEG0315S0049
9S-2370: MANIFOLDS AND EXHAUST PIPE
MANIFOLDS AND EXHAUST PIPE (9S2370 N/S & 4S8519 N/S)
Serial No. 46A24433 to 46A28817 inclusive
Note: 7S5003 Rain Cap Assembly is available
Refer also to Page 177 for special parts
Serial No. 46A24433 to 46A28817 inclusive
Note: 7S5003 Rain Cap Assembly is available
Refer also to Page 177 for special parts
Parts for your D8H TRACK-TYPE TRACTOR:
CATERPILLAR SISPos. | Part No | Qty | Parts name | Comments |
---|---|---|---|---|
4L-8337 | [2] | SEAL | ||
2S-9874 | [2] | RING | ||
5S-1236 | [1] | PIPE ASSEM. | ||
5M-6214 | [2] | PLUG | ||
(PART OF 5S1236 ASSEM.) | ||||
1D-4569 | [1] | BOLT | ||
3B-4508 | [1] | LOCKWASHER | ||
2S-7268 | [1] | MANIFOLD | ||
6H-1871 | [2] | SEAL | ||
1B-5357 | [12] | NUT | ||
1A-5822 | [11] | BOLT | ||
3B-4508 | [11] | LOCKWASHER | ||
0S-1594 | [4] | BOLT | ||
3B-4506 | [4] | LOCKWASHER | ||
6H-5852 | [1] | COVER | ||
4M-5469 | [1] | GASKET | ||
4S-6454 | [1] | MANIFOLD | ||
0S-1585 | [1] | BOLT (1.50" LONG) | ||
0S-1595 | [3] | BOLT (1.25" LONG) | ||
3B-4508 | [4] | LOCKWASHER | ||
8S-1460 | [1] | CLAMP | ||
[2] | STUD | |||
(PART OF ELBOW ASSEM. 5S1470) | ||||
[1] | COUPLING | |||
[1] | RING | |||
[2] | BOLT | |||
[2] | LOCKWASHER | |||
3H-3301 | [1] | GASKET | ||
9S-6120 | [1] | PIPE ASSEM. | ||
1H-2415 | [1] | BOLT | ||
1B-5357 | [1] | NUT | ||
5S-1470 | [1] | ELBOW ASSEM. | ||
5L-8854 | [1] | RING | ||
0S-1571 | [4] | BOLT (1.75" LONG) | ||
1B-5355 | [4] | NUT | ||
8H-5324 | [6] | GASKET | ||
3S-2252 | [1] | MANIFOLD | ||
5H-2711 | [1] | COVER | ||
5H-2712 | [1] | GASKET | ||
8H-3190 | [6] | GASKET | ||
1M-6034 | [1] | MANIFOLD |
Information:
AIR INLET AND EXHAUST SYSTEM
TURBOCHARGER GP
Truck Engine News
Engine News
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {1000, 1052, 1087}
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {1000, 1052, 1087}
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {1000, 1052, 1087}
Special Instruction
Installation of 7C9760 (12V) or 8N3569 (24V) Fuel Boost Pump Group{1250, 1256, 1260}
Installation of 7C9760 (12V) or 8N3569 (24V) Fuel Boost Pump Group{1250, 1256, 1260}
Installation of 7C9760 (12V) or 8N3569 (24V) Fuel Boost Pump Group{1250, 1256, 1260}
Installation Instructions for Turbochargers {1052}
Installation Instructions for Turbochargers {1052}
Installation Instructions for Turbochargers {1052}
Proper Remanufactured Turbocharger Housing Adjustment and Alignment for Caterpillar Engines {1052, 1053}
Proper Remanufactured Turbocharger Housing Adjustment and Alignment for Caterpillar Engines {1052, 1053}
Proper Remanufactured Turbocharger Housing Adjustment and Alignment for Caterpillar Engines {1052, 1053}
Service Magazine
Special Instructions Packaged With Turbocharger Cartridge Repair Kits May Be Incorrect{1053}
1986/02/03
1986/02/03
Changes To Retainer Nut Torque And Assembly Procedures For Turbocharger Compressor Wheels{0374,1052}
1977/02/28
1977/02/28
Use Of 9S3265 Retaining Compound On Schwitzer Turbocharger Compressor Wheel Retainer Nuts{1052,1053}
1979/06/25
1979/06/25
Only One Dowel Pin Is Now Used To Hold The Thrust Bearing In The Correct Position{1053,1052}
1979/09/03
1979/09/03
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {0769, 1052, 1087}
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {0769, 1052, 1087}
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {0769, 1052, 1087}