Timing Chain: Service and Repair

Fig. 5 Valve timing marks:

Fig. 6 Compressing Timing Chain Tensioner Spring:

(Figure 7) Compressing Tensioner Spring:

SPECIAL TOOLS REQUIRED (or equivalents)
^ J-22888, Crankshaft sprocket puller.
^ J-22888-11, Puller legs.
^ J-5590, Crankshaft sprocket installer.
^ J-33875, Timing chain tensioner, spring compressor.

REMOVE OR DISCONNECT
1. Engine front cover, refer to Timing Cover / Service and Repair.
2. With # 1 cylinder at TDC, align timing marks on crankshaft and camshaft sprockets.
3. Timing chain tensioner upper bolt, then loosen timing chain tensioner nut (or torx bolt) as much as possible without removing it.

NOTE: On some 1983-88 models it may be necessary to completely remove the timing chain tensioner.

4. Camshaft sprocket bolt, then the sprocket and timing chain. Tap the lower edge of the sprocket with a plastic mallet to loosen if necessary.
5. Crankshaft sprocket using J-22888 and J-22888-11.

INSTALL OR CONNECT
1. Crankshaft sprocket using tool J-5590.
2. Compress tensioner spring using J-33875 (figure 7).
3. Using a suitable tool (cotter pin, nail) that is capable of keeping the spring compressed, insert tool into hole "A" (figure 6).
4. Timing chain on sprockets and lubricate with engine oil. Lubricate thrust surface of sprockets with Molykote / camshaft assembly lube P/N 1052365 or equivalent.
5. Timing chain tensioner and align timing marks on camshaft and crankshaft sprockets with tabs on tensioner.
6. Align dowel on camshaft with dowel hole on camshaft sprocket and keyway on crankshaft sprocket with key on crankshaft, then install sprockets. Draw camshaft sprocket fully to camshaft using retaining bolt and torque bolt to 90-120 Nm (66-88 ft lbs).
7. Remove tensioner retaining tool (cotter pin, nail).
8. Engine front cover.