Timing Chain: Service and Repair

Fig. 32 Installing left camshaft pinion & chain:

1. Install ``rislan'' filter, chain tensioners, blades, and pads. Torque chain tensioner bolts to 6 ft. lbs.; blade bolts (coat threads with Loctite or equivalent) to 10 ft. lbs.; pad bolts to 6 ft. lbs.
2. Install key and crankshaft drive pinion, then rotate crankshaft clockwise to bring key in line with left cylinder bank. Install left crankshaft pinion and chain (double marking (a) on timing gear pinion), Fig. 32.

Fig. 33 Installing right camshaft pinion & chain:

3. Rotate crankshaft to bring mark (b) in line with oil pump assembly hole, Fig. 33. Install right camshaft pinion and chain (double marking (c) on timing gear pinion), then load the chain tensioners.

Fig. 34 Installation of counterweight & driving pinion:

4. Install counterweight (1) and its support. Install driving pinion (2) and its bolt, aligning mark (3) with counterweight bolt center line (4), Fig. 34.
5. Torque front and rear bolts of counterweight driving pinions to 59 ft. lbs. Install sealing plate with gasket to the rear of right cylinder head.
6. Install oil pump, key, and spacer. Torque oil pump bolts to 10 ft. lbs. Install oil pump chain and pinion. Coat bolts with Loctite or equivalent and torque to 4 ft. lbs. Lock engine using crankshaft turning tool .0134 HZ when torquing bolts.

Fig. 35 Counterweight check for proper setting:

7. Check counterweights for proper setting, Fig. 35, as follows:
a. Place non-angled end of gauge 0.0167 on face (A) of front counterweight (1).
b. Place angled end of gauge 0.0167 under face (B) of rear counterweight (2).
c. Check distance W between counterweight faces (A) and (B) and valve cover gasket plane of the cylinder head. This distance must lie between gauge marks; if not, carry out counterweight setting procedure. A counterweight set incorrectly by one tooth will cause a .2-.4 inch variation in distance W depending upon point of measurement on counterweight.

Fig. 36 Timing chain cover seals:

8. Replace timing chain cover seals (3) and (4), Fig. 36. Use tool .0134 G to fit seal (3) in position.

Fig. 37 Installing distributor body, rotor support & drive:

9. Install distributor body (5) on timing chain cover, then install rotor support (6) together with the drive (7), Fig. 37.
10. Install timing chain cover, torquing attaching bolts to 10 ft. lbs. Torque camshaft bolt to 59 ft. lbs.
11. Install crankshaft pulley. Coat nut with Loctite or equivalent and torque to 129 ft. lbs.