D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Caterpillar


Front Idler and Recoil Spring

Usage:

D3C (6SL, 7XL); D4C (6YL, 7SL)

(1) Distance nut must be turned backwards and kept in place after installation of spring ... 1.5 mm (.06 in)

8Y2735 Spring:

Assembled length ... 367.5 mm (14.47 in)

Free length ... 482.6 mm (19.00 in)

Force of spring after installation ... 73 ± 6 kN (8.2 ± .7 ton)

Outside diameter ... 168.2 mm (6.62 in)

(3) Diameter of shaft (new) ... 50.47 ± 0.025 (1.987 ± .001 in)

(4) Remove plug and fill idler with SAE 30W oil.

(5) Clearance between shaft and bearing (new) ... .076 ± .076 mm (.003 ± .002 in)

(6) Torque for the bolts that hold idler shaft ... 70 ± 15 N·m (51 ± 11 lb ft)

Then hit lock pin in place with a hammer and tighten bolt to a torque of ... 70 ± 15 N·m (51 ± 11 lb ft)

(7) Clearance between frame and guide plate (each side) ... 1.5 mm (.06 in)

(8) Rubber torics and all surfaces contacting them must be clean and dry at assembly. Apply a thin film of oil to contacting surfaces of the metal seal rings just prior to assembly. Seal rings must be assembled square with the bore and the torics and must not be bulged or twisted. Put lubricant on all other seals at assembly.

D5C (9DL, 6ZL)

Fill idler with SAE 30W oil.

(1) Distance nut must be turned backwards and kept in place after installation of spring ... 1.5 mm (.06 in)

(2) 8Y6659 Spring:

Assembled length ... 404.6 ± 1.5 mm (15.93 ± .06 in)

Free length ... 530.0 mm (20.87 in)

Force of spring after installation ... 87 ± 7 kN (9.8 ± .8 ton)

Outside diameter ... 171.45 mm (6.750 in)

(3) Diameter of new shaft ... 53.924 ± 0.025 mm (2.1230 ± .0010 in)

(4) Clearance between new shaft and bushing ... 0.406 ± 0.055 mm (.0160 ± .0022 in)

(5) Torque for the bolts that hold idler shaft ... 70 ± 15 N·m (50 ± 11 lb ft)

Then hit lock pin in place with a hammer and tighten bolt to a torque of ... 70 ± 15 N·m (50 ± 11 lb ft)

(6) Clearance between frame and guide plate (each side) ... 1.5 mm (.06 in)

(7) Rubber torics and all surfaces contacting them must be clean and dry at assembly. Apply a thin film of oil to contacting surfaces of the metal seal rings just prior to assembly. Seal rings must be assembled square with the bore and the torics and must not be bulged or twisted. Put lubricant on all other seals at assembly.

Caterpillar Information System:

D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Final Drive
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Steering Brake Group
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Steering Control Valve
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Steering Clutch Control Group
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Steering Clutch
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Steering Clutch Case and Frame
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Bevel Gear and Pinion
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Power Take-Off Drive (Attachment)
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Drive Shaft
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Transfer Gears
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Transmission Control Linkage
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Transmission
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Track Carrier Rollers
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Track Rollers
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Track
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Rollover Protective Structure (ROPS) Mounting
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Sweep Group (Attachment)
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Systems Operation
D3C, D4C AND D5C SERIES III TRACTORS POWER TRAIN Testing And Adjusting
D3C, D4C AND D5C SERIES III TRACTORS POWER SHIFT TRANSIMISSI Testing And Adjusting
D3C, D4C AND D5C SERIES II TRACTORS POWER TRAIN Duo-Cone Seals (Conventional & Inverted)
D3C, D4C AND D5C SERIES II TRACTORS POWER TRAIN Blocking Of The Machine
D3C, D4C AND D5C SERIES II TRACTORS POWER TRAIN Front Guard Assembly
D3C, D4C AND D5C SERIES II TRACTORS POWER TRAIN Oil Pan Guard Assembly
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