3903543 PISTON Caterpillar parts
302.5C, 303
Rating:
Alternative (cross code) number:
CA3903543
390-3543
3903543
CA3903543
390-3543
3903543
Weight: 0.92 pounds 0 kg.
MINI HYD EXCAVATOR,
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2021-09-16
2019-11-21
Number on catalog scheme:
5
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Information:
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1837 Bearing Puller Adapter 1
6V-3170 Double Acting Cylinder 1
4K-0684 Hard Washer 1
4C-9634 Puller Stud 1
9U-6832 Nut 1
3S-6224 Electric Hydraulic Pump Gp 1 Start By:
Remove the blade accumulators. Refer to Disassembly and Assembly, "Accumulator (Blade Cushion) - Remove and Install".
Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".
Illustration 1 g01397224
Remove bolts (2). Repeat for the opposite side of the machine.
Remove cover (1) from the machine.
Illustration 2 g01397240
Remove plate (3) .
Attach a suitable lifting device to blade lift cylinder (4). The weight of blade lift cylinder (4) is approximately 91 kg (200 lb).
Remove bolts (5) and caps (7) .
Use the suitable lifting device in order to position blade lift cylinder (4) on front frame assembly (6). Secure blade lift cylinder (4) to the front frame assembly (6) .
Illustration 3 g01397260
Attach a suitable lifting device to centershift cylinder (8) .
Remove bolts (9) and cap (10) .
Use the machine to retract centershift cylinder (8). Use the suitable lifting device in order to lower centershift cylinder (8) to the drawbar (11) .
Illustration 4 g01397275
Attach a suitable lifting device to blade lift arm (12). The weight of blade lift arm (12) is approximately 113 kg (250 lb).
Remove bolts (13) and lock (15) .
Remove pin (14) .
Illustration 5 g01397310
Remove bolts (17) and lock (18) .
Remove bolt (20) and the plate.
Remove pin (19) .
Remove four thrust washers (16) (not shown).
Use the suitable lifting device in order to remove blade lift arm (12) .
Illustration 6 g01397448
Remove bolts (21) and retainer (22) .
Remove seal (23) and shims (24) .
Partially remove yoke (27) from blade lift arm (12).
Use two people in order to remove yoke (27) from blade lift arm (12). The weight of yoke (27) is approximately 23 kg (50 lb).
Remove washers (25) and seals (26) .
Remove bearings (28) .
Illustration 7 g01397451
Remove lip seals (29) .Note: Note the orientation of lip seals (29) for assembly purposes.
Illustration 8 g01397453
Illustration 9 g01397459
Install Tooling (A) and support Tooling (A) with a suitable lifting device. Remove bearings (30) .
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1837 Bearing Puller Adapter 1
6V-3170 Double Acting Cylinder 1
4K-0684 Hard Washer 1
4C-9634 Puller Stud 1
9U-6832 Nut 1
3S-6224 Electric Hydraulic Pump Gp 1 Start By:
Remove the blade accumulators. Refer to Disassembly and Assembly, "Accumulator (Blade Cushion) - Remove and Install".
Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".
Illustration 1 g01397224
Remove bolts (2). Repeat for the opposite side of the machine.
Remove cover (1) from the machine.
Illustration 2 g01397240
Remove plate (3) .
Attach a suitable lifting device to blade lift cylinder (4). The weight of blade lift cylinder (4) is approximately 91 kg (200 lb).
Remove bolts (5) and caps (7) .
Use the suitable lifting device in order to position blade lift cylinder (4) on front frame assembly (6). Secure blade lift cylinder (4) to the front frame assembly (6) .
Illustration 3 g01397260
Attach a suitable lifting device to centershift cylinder (8) .
Remove bolts (9) and cap (10) .
Use the machine to retract centershift cylinder (8). Use the suitable lifting device in order to lower centershift cylinder (8) to the drawbar (11) .
Illustration 4 g01397275
Attach a suitable lifting device to blade lift arm (12). The weight of blade lift arm (12) is approximately 113 kg (250 lb).
Remove bolts (13) and lock (15) .
Remove pin (14) .
Illustration 5 g01397310
Remove bolts (17) and lock (18) .
Remove bolt (20) and the plate.
Remove pin (19) .
Remove four thrust washers (16) (not shown).
Use the suitable lifting device in order to remove blade lift arm (12) .
Illustration 6 g01397448
Remove bolts (21) and retainer (22) .
Remove seal (23) and shims (24) .
Partially remove yoke (27) from blade lift arm (12).
Use two people in order to remove yoke (27) from blade lift arm (12). The weight of yoke (27) is approximately 23 kg (50 lb).
Remove washers (25) and seals (26) .
Remove bearings (28) .
Illustration 7 g01397451
Remove lip seals (29) .Note: Note the orientation of lip seals (29) for assembly purposes.
Illustration 8 g01397453
Illustration 9 g01397459
Install Tooling (A) and support Tooling (A) with a suitable lifting device. Remove bearings (30) .
Caterpillar parts catalog:
Parts piston Caterpillar catalog:
1992103
PISTON & ROD GP
302.5C, 303
302.5C, 303
303, 303.5C, 303.5D, 303.5E, 303C CR, 303E CR, 304C CR, 304D CR, 304E, 305.5D, 305.5E, 305C CR, 305D CR, 305E, 414E, 416B, 416C, 416D, 416E, 420D, 422E, 424D, 426, 426B, 426C, 428, 428B, 428C, 428D, 4...
303, 303.5C, 303C CR, 304, 304C CR, 305, 305.5, 305.5E, 305C CR, 306, 306E, 307B, 307C, 308C, 311B, 311C, 312B, 312C, 312C L, 313B, 314C, 315C, 318B, 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D LRR,...
1204663
PISTON
303, 303.5, 304.5, 305, 305.5, 306
303, 303.5, 304.5, 305, 305.5, 306
1930779
PISTON
303, 304.5
303, 304.5
1931391
PISTON
303, 304.5, 305.5D, 305.5E, 305C CR
303, 304.5, 305.5D, 305.5E, 305C CR
3903544
PISTON
302.5C, 303
302.5C, 303
2337750
PISTON
303
303
2034085
PISTON
303
303
2047223
PISTON
303
303
2034067
PISTON
303
303
2395684
PISTON
318C, 319C
318C, 319C
318C, 319C, 319D, 319D LN, 320C, 320D, 320D FM, 320D FM RR, 320D L, 323D L, 323D LN
1850592
PISTON
1190, 1190T, 1290T, 2290, 2390, 2391, 2491, 318C, 319C, 319D, 319D L, 319D LN, 320B, 320C, 320E LN, 321D LCR, 323D L, 323D LN, 323D SA, 323E L, 325B L, 325C, 325D L, 330B L, 330C, 330D L, 345B L, 511,...
1190, 1190T, 1290T, 2290, 2390, 2391, 2491, 318C, 319C, 319D, 319D L, 319D LN, 320B, 320C, 320E LN, 321D LCR, 323D L, 323D LN, 323D SA, 323E L, 325B L, 325C, 325D L, 330B L, 330C, 330D L, 345B L, 511,...
318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321C, 321D LCR, 323D L, 323D LN, 323D SA
315D L, 316E L, 318C, 318D L, 318E L, 319D L, 319D LN, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 3...
315D L, 316E L, 318C, 318D L, 318E L, 319C, 319D, 319D L, 319D LN, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, ...
2778110
PISTON
303
303
2047223
PISTON
303
303
2034085
PISTON
303
303
2337750
PISTON
303
303
3903545
PISTON
302.5C, 303
302.5C, 303
3903544
PISTON
302.5C, 303
302.5C, 303