3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Caterpillar


Engine Front Support And Trunnion

Usage:

Remove Engine Front Support And Trunnion

START BY:

a. remove vibration damper and crankshaft pulley

b. remove oil pan

1. Drain the hoist, converter and brake hydraulic tank. The capacity of the tank is 220 liter (58 U.S. gal.).

2. Disconnect elbow (1) at the torque converter oil cooler.

3. Fasten tooling (A) to the cylinder block oil pan flange.

4. Install a 50 ton screw jack (2) under the mid point of tooling (A).

5. Remove the bolts and nuts that hold support (3) to frame (4).

6. Raise the front of the engine with tooling (A) until engine support (3) is clear of frame (4).

7. Remove engine support (3) from the trunnion.

8. Remove trunnion (5) from the timing gear cover.

9. Inspect resilient mount (6) which is part of trunnion (5).

10. Remove resilient mount (6) from the adapter if it is worn or damaged.

Install Engine Front Support And Trunnion

1. Be sure the surface for resilient mount (2) on adapter (1) is clean and free of nicks or burrs.

2. Put adapter (1) in a hydraulic press so the adapter will be evenly supported when resilient mount (2) is pressed into place.

3. Place resilient mount (2) on adapter (1) so the vertical centers are aligned. Dimension (X) must be 105.92 mm (4.170 in.). Recheck this alignment because incorrect alignment will result in resilient mount drainage.


NOTICE

Use tooling (A) to press only against steel ring (3) of the resilient mount. Do not press against any other part of the resilient mount because damage to the resilient mount will occur.


4. Place tool (A) on steel ring (3), and use a hydraulic press to install resilient mount (2) onto adapter (1). Install resilient mount (2) to dimension (Y). Dimension (Y) must be 25.4 mm to 27.4 mm (1.00 to 1.08 in.).

5. Install trunnion (4) to the timing gear cover.

6. Install bracket (5). Use the two 4 1/2 in. long bolts to secure the bracket.

7. Tighten the bolts for trunnion (4) and bracket (5) to a torque of 86 to 114 N·m (65 to 85 lb.ft.).

8. Fasten support (6) to trunnion (4). Tighten the four bolts to a torque of 178 to 232 N·m (130 to 170 lb.ft.).

9. Use tool (B) to lower the front of the engine until support (6) contacts the frame. Install bolts (7), the nuts and washers. Tighten the bolts to a torque of 313 to 407 N·m (230 to 300 lb.ft.).

10. Remove tooling (A).

11. Be sure the mating surfaces of elbow (8) and the torque converter oil cooler are clean.

12. Install a new O-ring seal in elbow (8), and fasten the elbow to the torque converter oil cooler.

13. Fill the hoist, converter and brake hydraulic tank. See the Maintenance Guide.

END BY:

a. install oil pan

b. install vibration damper and crankshaft pulley

Caterpillar Information System:

3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Vibration Damper And Crankshaft Pulley
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Water Pump
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Water Temperature Regulators
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Drive (Later)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Belt Tightener (Later)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Drive And Belt Tightener (Later)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Drive (Earlier)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Assembly
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Governor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Injection Pump Housing
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Injection Pump Housing And Governor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Automatic Timing Advance
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Crankshaft Front Seal And Wear Sleeve
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Governor Shutoff Solenoid
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Governor Control Cylinder
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Timing Gear Cover
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft Bearings
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft Idler Gear
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft Rear Gear And Balancer
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Exhaust Manifolds
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Exhaust Crossover Manifold
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Valve Covers
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Push Rods, Valve Lifters And Valve Bridges
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