S10/T10 Blazer 2WD L4-137 2.2L DSL (1984)
injection pump, Fig. 21. Do not attempt to rotate crankshaft in opposite direction of normal crankshaft rotation.
14.
Loosen tension pulley nut, allowing the tension pulley assembly to take up belt slack. Torque tension pulley nut to 78-95 ft. lbs.
15.
Install injection pump pulley flange. The hole in the flange outer circumference should be aligned with injection pump timing mark.
Fig. 22 Injection pump & camshaft pulley alignment
Fig. 23 Measuring belt tension
16.
Again rotate engine in normal direction of rotation and bring cylinder No. 1 to TDC on compression stroke. Check injection pump and camshaft
pulley alignment marks to ensure proper installation, Fig. 22.
17.
Check timing belt tension between crankshaft and injection pump pulley with tool J-29771, Fig. 23. Tension should be 213-356 psi.
18.
Install upper and lower timing pulley housing covers.
19.
Install crankshaft pulley and drive belts.
