8T1979 LINKAGE AS Caterpillar parts
517, 527, D10, D10N, D10R, D11N, D11R, D4H, D4H XL, D4HTSK II, D4HTSK III, D5H, D5H XL, D5HTSK II, D6G, D6H, D6H XL, D6H XR, D6R, D6R II, D6R III, D6R STD, D6T, D6T LGP, D6T XL, D7H, D7R, D7R II, D7R ...
Alternative (cross code) number:
CA8T1979
8T-1979
8T1979
Weight: 1 pounds 0 kg.
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LINKAGE AS 8T1979 Caterpillar
genuine, new aftermarket tractor parts with delivery
TRACK SKIDDER, TRACK-TYPE TRACTOR,
Illustration 1 g02154680
Right side view
(3) Lubrication pressure
(4) Torque Converter Inlet (optional)
(5) Main Supply
(6) Clutch 6
(7) Clutch 5
(8) Clutch 4
(9) Clutch 3
(10) Clutch 2
(11) Clutch 1
(12) Torque converter inlet
(13) Lockup clutch
(14) SOS sampling port (transmission controls)
(15) Pump pressure port (transmission controls)
(16) SOS sampling port (torque converter)
(17) Pump pressure port (torque converter)
Illustration 2 g02267135
Left side view
(50) Lubrication pressure port
Table 1
TH55-E70 and TH55-E90 Power Train Pressures
Pressure Taps Description Low Idle(1) High Idle(2)
3 Lubrication pressure(4) 110 35 kPa (16 5 psi) 330 35 kPa (48 5 psi)
4(3) Torque Converter Inlet (optional) 210 70 kPa (30 10 psi) 830 70 kPa (120 10 psi)
5 Main Supply 2410 70 kPa (350 10 psi) 2900 70 kPa (420 10 psi)
6 Clutch 6 2520 70 kPa (366 10 psi) 2760 70 kPa (400 10 psi)
7 Clutch 5 2170 70 kPa (315 10 psi) 2280 70 kPa (330 10 psi)
8 Clutch 4 1930 70 kPa (280 10 psi) 1900 70 kPa (275 10 psi)
9 Clutch 3 1790 70 kPa (260 10 psi) 1830 70 kPa (265 10 psi)
10 Clutch 2 2100 70 kPa (305 10 psi) 2210 70 kPa (320 10 psi)
11 Clutch 1 2340 70 kPa (340 10 psi) 2410 70 kPa (350 10 psi)
12 Torque converter inlet 210 70 kPa (30 10 psi) 830 70 kPa (120 10 psi)
13 Lockup clutch 0 psi 2413 70 kPa (350 10 psi)
14 SOS sampling port (transmission controls) 2930 70 kPa (425 10 psi)
15 Pump pressure port (controls) 2520 70 kPa (366 10 psi) 2930 70 kPa (425 10 psi)
16 SOS sampling port (torque converter) 830 70 kPa (120 10 psi)
17 Pump pressure port (converter) 210 70 kPa (30 10 psi) 830 70 kPa (120 10 psi)
50 Lubrication pressure(4) 110 35 kPa (16 5 psi) 330 35 kPa (48 5 psi)
(1) Specified Value at 60° C (140° F) Sump Temperature and at 600 rpm
(2) Specified Value at 60° C (140° F) Sump Temperature and at 1900 rpm
(3) Optional test port (not present on all units)
(4) The proper location to check the lubrication pressure, is at pressure tap (3).
Table 2
TH55-E70 Transmission Clutch Assignments
Operation Gear Ratios CLUTCHES Transmission Output Speed at 1900 RPM Input with LUC Engaged (RPM)
1 2 3 4 5 6
Park
Caterpillar parts catalog
527 Track Skidder J6800001-UP (MACHINE) POWERED BY C7.1 Engine
D4H Track-Type Skidder Series II 8ZF00001-UP (MACHINE) POWERED BY 3204 Engine
D5H Track-Type Skidder Series II 7EG00001-UP (MACHINE) POWERED BY 3304 Engine
D4H Series III Track-Type Skidder 7PK00001-UP (MACHINE) POWERED BY 3304 Engine
527 TRACK-TYPE SKIDDER 2RS00001-UP (MACHINE) POWERED BY 3304 Engine
527 TRACK-TYPE SKIDDER 3DS00001-UP (MACHINE) POWERED BY 3304 Engine
527 TRACK-TYPE SKIDDER Grapple 4NS00001-UP (MACHINE) POWERED BY 3304 Engine
517 TRACK-TYPE SKIDDER Grapple 5WW00001-UP (MACHINE) POWERED BY 3304 Engine
517 TRACK-TYPE SKIDDER 6PW00001-UP (MACHINE) POWERED BY 3304 Engine
527 Track Skidder JSR00001-UP (MACHINE) POWERED BY 3304 Engine
D9R Track-Type Tractor HWH00001-UP (MACHINE) POWERED BY 3408C Engine
DV232 Track Type Tractor NJH00001-UP (MACHINE) POWERED BY C18 Engine
D9R Custom Parts Manual 7TL00001-UP (MACHINE) POWERED BY 3408 Engine
D8R Custom Parts Manual Track-Type Tractor 7XM00001-UP (MACHINE) POWERED BY 3406 Engine
D11R Custom Parts Manual Track-Type Tractor 8ZR00001-UP (MACHINE) POWERED BY 3508 Engine
D10R Custom Parts Manual Track-Type Tractor 3KR00001-UP (MACHINE)
D6R Custom Parts Manual Track-Type Tractors 1RW00001-UP (MACHINE) POWERED BY 3306 Engine
D7R Custom Parts Manual Track-Type Tractors 2EN00001-UP (MACHINE) POWERED BY 3306 Engine
D9R CUSTOM PARTS MANUAL ABK00001-UP (MACHINE)
D10R CUSTOM PARTS MANUAL TRACK-TYPE TRACTOR AKT00001-UP (MACHINE) POWERED BY 3412E Engine
D7R CUSTOM PARTS MANUAL TRACK-TYPE TRACTOR ABJ00001-UP (MACHINE) POWERED BY 3176C Engine
D6R SERIES II CUSTOM PARTS MANUAL TRACK-TYPE TRACTOR AAX00001-UP (MACHINE) POWERED BY C-9 Engine
D11R CUSTOM PARTS MANUAL TRACK-TYPE TRACTOR 7PZ00001-UP (MACHINE)
D5H LGP Series II Track-Type Tractors Power Shift 1DD04000-UP (MACHINE) POWERED BY 3304 Engine
D6H D6H LGP Series II Track-Type Tractors 5HF04000-UP (MACHINE) POWERED BY 3306 Engine
D6H Series II Track-Type Tractor Direct Drive 1FJ04000-UP (MACHINE) POWERED BY 3306 Engine
D4H XL D4H Series IIILGP Track-Type Tractors 8PJ00001-UP (MACHINE) POWERED BY 3304 Engine
D4H LGP Track-Type Tractor Direct Drive 4NK00001-UP (MACHINE) POWERED BY 3304 Engine
D5H Track-Type Tractor Power Shift XL 8RJ00001-UP (MACHINE) POWERED BY 3304 Engine
D6H Series II XL Track-Type Tractor Power Shift 8ZJ00001-UP (MACHINE) POWERED BY 3306 Engine
D6H Track-Type Tractor XL 9KJ00001-UP (MACHINE) POWERED BY 3306 Engine
D6H XL Series II Track-Type Tractor 9LK00001-UP (MACHINE) POWERED BY 3306 Engine
D6H XR Series II Track-Type Tractor Differential Steering 1YL00001-UP (MACHINE) POWERED BY 3306 Engine
D11N Track-Type Tractor Power Shift 4HK00001-UP (MACHINE) POWERED BY 3508 Engine
D10N Track-Type Tractor 3SK00001-UP (MACHINE) POWERED BY 3412 Engine
D8N Track-Type Tractor 7TK00001-UP (MACHINE)
D9R Track-Type Tractor Power Shift 8BL00001-00829 (MACHINE) POWERED BY 3408 Engine
D9R Track-Type Tractor Differential Steering 7TL00001-00556 (MACHINE) POWERED BY 3408 Engine
D8R Track-Type Tractor 7XM00001-UP (MACHINE) POWERED BY 3406 Engine
D10R Track-Type Tractor 3KR00001-UP (MACHINE) POWERED BY 3412 Engine
D6R Track-Type Tractor XL 4MN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering 5LN00001-UP (MACHINE) POWERED BY 3306 Engine
D7R Track-Type Tractor LGP 9HM00001-UP (MACHINE) POWERED BY 3306 Engine
D7R Track-Type Tractor Differential Steering 2EN00001-UP (MACHINE) POWERED BY 3306 Engine
D9R Track-Type Tractor Power Shift 8BL00830-01052 (MACHINE) POWERED BY 3408 Engine
D9R Track-Type Tractor Differential Steering 7TL00557-00851 (MACHINE) POWERED BY 3408 Engine
D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406C Engine
D11R Track-Type Tractor Power Shift 8ZR00001-UP (MACHINE) POWERED BY 3508 Engine
D6R Track-Type Tractor 2YN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering 1RW00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering XR 7KN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor 8LN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor 9PN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor XR Power Shift 6JN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Power Shift 6MR00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering 7GR00001-UP (MACHINE) POWERED BY 3306 Engine
D7R Track-Type Tractor 2HR00001-UP (MACHINE) POWERED BY 3306 Engine
D7R LGP Track-Type Tractor Differential Steering 3DN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor 2HM00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering 9BM00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering 9MN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R LGP Track-Type Tractor 8TM00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor Differential Steering 4FM00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor 4JR00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor XR 8XN00001-UP (MACHINE) POWERED BY 3306 Engine
D6R Track-Type Tractor LGP 4HN00001-UP (MACHINE) POWERED BY 3306 Engine
D11R Track-Type Tractor 9TR00001-UP (MACHINE) POWERED BY 3508 Engine
D11R Carrydozer Track-Type Tractor 9XR00001-UP (MACHINE) POWERED BY 3508B Engine
D9R Track-Type Tractor Power Shift 8BL01053-UP (MACHINE) POWERED BY 3408 Engine
D9R Track-Type Tractor Differential Steering 7TL00852-UP (MACHINE) POWERED BY 3408 Engine
D11R TRACK-TYPE TRACTOR 7PZ00001-UP (MACHINE) POWERED BY 3508B Engine
D8R Series II Track-Type Tractor 6YZ00001-UP (MACHINE) POWERED BY 3406E Engine
D9R Track-Type Tractor Differential Steering ABK00001-UP (MACHINE) POWERED BY 3408 Engine
D7R Track-Type Tractor AFG00001-UP (MACHINE) POWERED BY 3176C Engine
D7R Series II TRACK-TYPE TRACTOR STD, XR Differential Steering AEC00001-01499 (MACHINE) POWERED BY 3176C Engine
D7R Track-Type Tractor ACS00001-UP (MACHINE) POWERED BY 3176C Engine
D11R Carrydozer Track-Type Tractor AAF00001-UP (MACHINE) POWERED BY 3508B Engine
D6R SERIES II Track-Type Tractor XL Differential Steering AAX00001-UP (MACHINE) POWERED BY C-9 Engine
D6R Series IITRACK-TYPE TRACTOR FTC AEM00001-UP (MACHINE) POWERED BY C-9 Engine
D9R Track-Type Tractor Power Shift ACL00001-UP (MACHINE) POWERED BY 3408 Engine
D10R TRACK-TYPE TRACTOR AKT00001-UP (MACHINE) POWERED BY 3412E Engine
D8R TRACK-TYPE TRACTOR Differential Steering AKA00001-UP (MACHINE) POWERED BY 3406E Engine
D6R Track-Type Tractor XW Differential Steering DMP00001-UP (MACHINE) POWERED BY 3306 Engine
D7R Series ll Track-Type Tractor LGP Differential Steering ABJ00001-01499 (MACHINE) POWERED BY 3176C Engine
D9R TRACK-TYPE TRACTOR JJB00001-UP (MACHINE) POWERED BY 3408C Engine
D6R SERIES II TRACK-TYPE TRACTOR BLE00001-UP (MACHINE) POWERED BY C-9 Engine
D6R SERIES II TRACK-TYPE TRACTOR BLT00001-UP (MACHINE) POWERED BY C-9 Engine
D6R Series II TRACK-TYPE TRACTOR LGP, XW BNC00001-UP (MACHINE) POWERED BY C-9 Engine
D6R Series SERIES IIFTC,LGP TRACK-TYPE TRACTOR ACJ00001-UP (MACHINE) POWERED BY C-9 Engine
D6R Series IIDS,LGP TRACK-TYPE TRACTOR ADE00001-UP (MACHINE) POWERED BY C-9 Engine
D6R Series IIFTC, XL TRACK-TYPE TRACTORS BRJ00001-UP (MACHINE) POWERED BY C-9 Engine
D6R Series IIDS, XL TRACK-TYPE TRACTORS BPM00001-UP (MACHINE) POWERED BY C-9 Engine
D9R TRACK-TYPE TRACTOR WDM00001-UP (MACHINE) POWERED BY 3408C Engine
D6T TRACK-TYPE TRACTOR XL VPAT, XW VPAT, LGP VPAT, Differential Steering DTD00001-UP (MACHINE) POWERED BY C9.3 Engine
Parts linkage Caterpillar catalog:
8T1980
LINKAGE AS
517, 527, D10, D10N, D10R, D11N, D11R, D4H, D4H XL, D4HTSK II, D4HTSK III, D5H, D5H XL, D5HTSK II, D6G, D6H, D6H XL, D6H XR, D6R, D6R II, D6R III, D6R STD, D6T, D6T LGP, D6T XL, D7H, D7R, D7R II, D7R ...
8T1980
LINKAGE AS
517, 527, D10, D10N, D10R, D11N, D11R, D4H, D4H XL, D4HTSK II, D4HTSK III, D5H, D5H XL, D5HTSK II, D6G, D6H, D6H XL, D6H XR, D6R, D6R II, D6R III, D6R STD, D6T, D6T LGP, D6T XL, D7H, D7R, D7R II, D7R ...