How To Run An Overhead Valve Adjustment On A Detroit Engine

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Wed, 03 Jul 2024 03:31:29 +0000

None of them have ever had the valves adjusted and none of the owners were aware of any valve adjustment needed either now or in the future. The tech doing the adjustment stated that half the valves were too tight and that seemed to be the trend from the factory. Set the pedestal of the dial indicator on the top of the injector cam roller. Detroit 60 series valve adjustments. James, Welcome to the Forum. † When setting injector heights or valve clearances, the component should be set to the "Setting Dimension" shown.

1 injector rack returns to its full-fuel position and secure the adjusting screw locknut. Never set the valves and injector of the same cylinder at the same time. 6067LK28, 6067LK45, 6067LK60 — 11. To correctly set injector and valves. 2 injector rack control lever and tighten the outer adjusting screw. If necessary, adjust the push rod. Adjusting the starting aid screw to obtain the required setting between the shoulder on the injector rack clevis and the injector body.

You should have your valve lash inspected at manufacturers recommended intervals. Your email address will not be published. Turn the idle speed adjusting screw until ½" of the threads (12-14 threads) project from the locknut when the nut is against the high speed plunger. This injector can now be set using this procedure: - Loosen the locknut on the adjusting screw at least two full turns. 1 as outlined in Step 6. My previous bus was a 93 Marathon with an 8V92, but the same logic is applied to the series 60 engine. Use tool J–42749 w/92J cam. If unsure of the adjustment, repeat step 1 and step 4. If No 1 does not "spring" back upward, turn the No.

Repeat steps thru until all injectors and valves have been set. INTAKE VALVE CLEARANCE. 11) On current turbocharged engines, adjust the external starting aid screw as follows: - With the engine stopped, place the governor stop lever in the run position and the speed control lever in the idle speed position. Install all remaining components that were removed for this procedure. We also offer body shop services around the Midwest and a mobile truck service for convenient truck maintenance on the road. Their position determines the amount of fuel injected into each cylinder and ensures equal distribution of the load. Either of those scenarios could end up costing you more money than getting your engine serviced by professionals. Note: Before starting the engine after a speed control adjustment or after removal of the engine speed control adjustment or after removal of the engine governor cover, the serviceman must determine that the injector racks move to the no fuel position when the governor stop lever is placed in the stop position. All instructions, diagrams, videos have been checked for accuracy and ease of application; however success and safety in working with tools depend to a great extent upon individual accuracy, skill, and caution. Install the governor cover. Loosen the lock nut and turn the idle speed adjusting screw until the engine is operating at approximately 15rpm below the recommended idle speed. Start and drive the vehicle to verify proper Jake Brake® performance. FUEL INJECTOR HEIGHTS Models: §. If the rack of the No.

Fuel Injector Timing For Your 71 Series Inline Engine. Doing this will result in engine damage. If oil is below room temperature (below 16 °C [60°F]), wait at least two minutes for oil to be purged from the J-Lash adjusting screw. Limiting Speed For Your Mechanical Governor Of Your 71 Series Inline Engine. Adjust the valves and set the fuel injector heights as follows: - Disconnect starting power for engine. Call 888-642-6460 now. Do not raise the engine speed more than 15 rpm with the buffer screw. Using Timing Gage on DDEC II, DDEC III, and DDEC IV. Reset screws are not to be dissembled in the field. Hold the push rod witha 5/16" wrench and tighten the locknut with a ½" wrench. 5 Removal and Cleaning of Three-piece Rocker Cover" for three-piece rocker cover. Install the fuel rod between the governor and injector control tube lever. The exhaust valves are adjusted the same way as the intake valves, except use a 0. ) The exhaust valve bridges must be adjusted and the adjustment screws locked securely at the time the cylinder head is installed on the engine.

Note: Make the following adjustment with the engine stopped and cold with oil temperature 60°C (140°F) or below. Required fields are marked *. Just as the exhaust valves are closing, the intake valves will start to open. Note: On "TT" engines, back out the Belleville spring retainer nut until there is approximately 0. Clean and remove the valve rocker cover, the governor cover and lever assembly. Note: Current limiting speed governors used in turbocharged engines include a starting aid screw threaded into a boss on the governor housing. On engines equipped with a Jake Brake®, move the handle on the injector height gage to the alternate position, 90 degrees to the shank. 4 for valve identification.

Rocker Arm Adjusting Screw and Locknut.