Service Precautions Summary 6. Cylinder head installation requires lowering the head onto the gasket using the alignment screws and washers at the sides of the head and block. The head must be pulled back to the mounting plate using screws inserted through the plate. Pressed bosses in the gasket keep the head from making full contact with the gasket surface and prevent damage to the elastomer sealing rings as the head slides into position. Following is a summary list of the DO and DON’T issues applying to MP8 engine service. 1. DO NOT machine the cylinder head for clean-up since this will change injector depth, thereby affecting emissions.
It will also upset the ability to correctly adjust timing gear backlash. 2. DO NOT grind the injector copper sleeves. 3. Install the crankshaft main bearing caps according to marked assembly number. 4. Connecting rod caps MUST BE mated to their respective connecting rods due to the “fractured manufacturing” process used. Also, the rod caps can be installed only one way because of the difference in spacing between screw holes at each side of the cap. Use of ether or similar types of starting aids in MACK ® US07 emission compliant engines is strictly prohibited. This applies to engines with or without the electric pre-heater option. An explosion could occur.
Failure to heed this danger may result in severe personal injury or death. 5. DO NOT use the lifting eye on the flywheel housing when tilting the engine/transmission assembly to an angle greater than 15 degrees. 7. The MP8 engine uses a number of O-rings for sealing various fluid joints and tubes. It is essential that new O-rings of the correct material be used whenever joints are disassembled and reassembled. Page 11 INTRODUCTION