Detroit 60 Series Valve Adjustment

Turn the leveling screw clockwise until a light drag is felt on the feeler gage. Place the required feeler gage listed in Table. Between the solid side of the bridge (the side without the leveling screw) and the exhaust rocker arm adjusting screw.

Location of Identification Groove. With the engine at operating temperature and no load on the engine, place the speed control lever in the full-fuel position. 007" of its seat in the governor control housing. If lash setting is incorrect, repeat step 1. Detroit 60 series valve adjustments. through step 3. A sudden increase in effort can result from. However if the governor has been reconditioned or replaced, and to ensure the engine speed will not exceed the recommended no-load speed as given on the option plate, set the maximum no-load speed as follows: - Loosen the locknut and back off the high speed spring retainer approximately 5 turns. Verify the injector rack of No. Bar the engine in the direction of rotation and observe the intake and exhaust valve rollers at any cylinder that is close to TDC (top dead center). Note: If a wrench is used on the crankshaft bolt at the front of the engine, do not turn the crankshaft in a left-hand direction of rotation or the bolt may be loosened.

"Checking Tolerance Chart". We look forward to attending one of the "bus meetings". Install the fuel rod between the governor and injector control tube lever. Reinsert the feeler gage to ensure that the adjustment did not change when the locknut was tightened. Guide To Tuning Up Your Detroit Diesel 71 Series Inline Engine. With the engine at 100 degrees fahrenheit (38 degrees celsius) or less, check the valve clearance. The type of governor used depends on the engine applications. Two Screw Assembly: - Turn down the inner adjusting screw of the No. Position the remaining injector rack control levers as outlined in steps 7 and 8.

Adjusting Leveling Screw. If the gap setting is incorrect, reset the gap adjusting screw. Bridge Leveling Screw Locknut. However, if a hot engine adjustment is desired use the following procedure. Coach ownership is not mandatory to partake of everything POG has to offer. Injector racks must be adjusted so that the effort to move the throttle from the idle speed position to the maximum speed position is uniform. XL Coaches also require dismantling of the bedroom or closet area. There are a lot of Series 60 owners here that are busy walking their dogs, recovering from a day of blinging out their coaches, or just well - sleepy!

1426 to 1825 rpm||1||Up to. The gap should be 0. The preliminary adjustments consist of the first four items in the tune-up sequence. The position of the injector control rack levers must be correctly set in relation to the governor. The exhaust valve bridges must be adjusted and the adjustment screws locked securely at the time the cylinder head is installed on the engine.

Cylinder with Valve Overlap. Intake and exhaust valve clearance and fuel injector height are adjusted by means of an adjusting set screw and locknut located at the valve end of the rocker arm. A number of problems could occur that will hinder your truck's performance and potentially leave you with more repairs to address. After each set of intake and exhaust valves is adjusted, adjust the corresponding injector listed in Table "Valve Lash and Injector Height Adjustment Sequence". Verify proper injector rack adjustment for both No.

Series 60 Service Manual - 6SE483|. Install the governor cover. The objective is to adjust all six injectors to the same feel. Valve Clearance Adjustment (Hot Engine). Hex wrench, back out the adjusting screw ONLY until the correct size feeler gage (listed in Table. We also offer body shop services around the Midwest and a mobile truck service for convenient truck maintenance on the road. Variable speed mechanical. James, Good question. Bar the engine over in the direction of normal rotation until the next cylinder in the adjustment sequence is in its valve overlap period. The injector is now adjusted. The valve lash is also the only way for the valves to pass heat into the cylinder head. To be sure of the proper rack adjustment, hold the speed control lever in the maximum speed position and press down on the injector rack with a screwdriver or finger tip and note the "rotating" movement of the injector control rack when speed control lever is in the maximum speed position. Properly positioned injector rack control levers with the engine at full load will result in the following: Speed control lever at maximum speed position. Back out the bridge leveling screw in the slave piston assembly until the end of the screw is beneath the surface of the bridge in the slave piston assembly.

Remove the fuel rod from the differential lever and the injector control tube lever. Use a new gasket and install the governor cover and lever assembly. When the starting aid screw is properly adjusted, the gage should have a small clearance of 1/64" in the space along the injector rack shaft between the rack clevis and the injector body. Loosen the fuel modulator lever ("U" bolt) and move the modulator lever along the injector control tube to avoid contact with the modulator cam or the adjacent cylinder head stud nut. After the adjustments are completed, reconnect and adjust the supplementary governing device.

Move the stop lever to the run position. Note: The starting aid screw will be ineffective if the speed control lever is advanced toward wide open throttle during startup. Exhaust valves on the cylinder must be in the closed position (rocker arm roller should be on the base circle of the camshaft). Table 2 – Series 71 Engine Four Valve Cylinder Heads. By the way, how come you are not out here in OKC to ask your question in person. Table 17 in the manual recommends the 60K mile initial valve lash adjustment.