Download complete manual - pdf - Xtreme Manufacturing

EngineXR620/621/842/1045/1245/1254/1267/1534/2050/30345-16 CHECK AND ADJUST VALVE TIP CLEARANCESEVERY 1,000 HOURS OFOPERATIONPerform the following procedure to check and adjust the valve tip clearances.PersonnelSpecial tools and equipment– TASK REQUIREMENTS –One mechanicFeeler gaugeSafety glassesParts and consumable materials Danger tags (2)INITIAL SET-UP1. Park forklift on level surface.2. Set Travel Select lever to NEUTRAL (N).3. Set Parking Brake switch to ON.4. Retract boom and lower carriage. Allow sufficient space to open forklift covers.5. Set Ignition switch to OFF.6. Attach danger tags to steering wheel and ignition key. Refer to para. 2-5, for lockout-tagoutprocedure.CHECK AND ADJUST VALVE CLEARANCE1. Open engine cover (Figure 1-2).NOTE: The valve clearances are checked between the top of the valve stem and therocker lever (Figure 5-15, A), while the engine is engine cold. The correct clearance forthe inlet valves is 0.008” and 0.018” for the exhaust valves. The valve positions areshown in (B). Refer to Table 5-1 for valve and cylinder numbers.NOTE: The number 1 cylinder is the furthest from the flywheel end of the engine.2. Rotate crankshaft in normal direction until inlet valve (B7) of number 4 cylinder has just opened andexhaust valve (B8) of same cylinder has not closed completely. Check clearances of valves (B1/B2)and (B2) of number 1 cylinder and adjust them, if necessary.3. Set valves (B3/B4) of number 2 cylinder as indicated above for number 4 cylinder. Check clearancesof valves (B5/B6) of number 3 cylinder. Adjust valve clearance as required.4. Set valves (B1/B2) of number 1 cylinder. Check clearances of valves (B7/B8) of number 4 cylinder.Adjust valve clearance as required.5. Set valves (B5/B6) of number 3 cylinder. Check clearances of valves (B3/B4) of number 2 cylinder.Adjust valve clearance as required.Service Manual Rev 01 – 05/10 5-27P/N 24933-000