D5 TRACTOR POWER TRAIN Caterpillar


Flexible Coupling Drive (Power Shift)

Usage:

Removal And Installation


1-Bolts (sixteen). 2-Joints (four). 3-Bolt, washer assembly, washer (assemble with concave side against washer assembly). 4-Flywheel output flange. 5-Torque converter input flange.

Checking Flexible Drive Coupling Alignment

Position engine in mounting location within the main frame. Check for correct engine-to-transmission alignment as follows:

1. Remove the torque converter input flange.

2. Fasten a 7H1942 Indicator (with a 7H1940 Universal Attachment) to the torque converter input shaft using a 7H1948 Snug, 7H1945 Holding Rod, 3/8 in. (9,5 mm) diameter rod 3 in. (76,2 mm) long and a 1J9778 Hose Clamp.


CHECKING VERTICAL AND HORIZONTAL ALIGNMENT (Viewed from left side of machine.)
Total indicator reading must not exceed .080 in. (2,03 mm). Correct any misalignment by adding or removing shims under engine rear supports.

3. Zero the indicator on the outside diameter of engine output flange as illustrated. Take an indicator reading every 90° while rotating the torque converter input shaft one complete turn.

4. Remove the 7H1940 Universal Attachment. Position the anvil of the dial indicator between the bolt holes and the outside diameter of engine output flange as illustrated.


CHECKING FACE ALIGNMENT (Viewed from left side of machine.)
Total indicator reading must not exceed .026 in. (0,66 mm). Move front of engine as necessary to obtain correct dimension.

5. Zero the dial indicator. Take an indicator reading every 90° while rotating the torque converter input shaft one complete turn.

6. Recheck both settings and adjust if necessary. When alignment is correct, tighten engine mounting bolts as follows:

a. Front mounting bolts - 460 ± 50 lb. ft. (63,6 ± 6,9 mkg).
b. Rear mounting bolts - 225 ± 30 lb. ft. (31,1 ± 4,1 mkg).

Misalignment

If it is necessary to shift the engine from one side to the other in the frame, loosen the hold-down bolts and shift the engine accordingly.

If the holes for the hold-down bolts are enlarged, dowels should be installed to hold the engine in the proper location after it is bolted down.

Extreme misalignment is probably the result of bent main frame channels. They should be straightened. Extreme wear in the engine front support will also cause misalignment.

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