Mack MP7 - Flywheel Housing Installation

Page 224
REPAIR INSTRUCTIONS, PART 1
306
Figure 306 — Intermediate Idler (Double Idler) Gearset
14. Check that the intermediate idler gear timing
marks align with the timing marks on the
crankshaft gear teeth as shown in
Figure 307. Check that the camshaft is
positioned at TDC by having the TDC
marking on the camshaft aligned with the
markings on the No. 7 camshaft bearing cap.
307
Figure 307 — Camshaft and Double Idler Gear Check
15. Tighten the intermediate gearset (double
idler) mounting bolts in sequence to
specification.
16. Install the lower idler gear onto the timing
gear plate and torque to specification.
17. Remove the J 44514-5 clamp assembly tool
from the timing gear plate.
18. Remove the J 44514-1A gauge plate tool
and reinstall the vibration damper and clamp
plate using new fasteners. Torque to
specification.
Flywheel Housing Installation
[211 HD]
308
Figure 308 — Flywheel Housing and Timing Gear Cover
Rotate the cylinder block so the timing gear
mounting plate is at the top.
Inspect the flywheel housing machined surfaces,
screw holes and pilot locations for cracks or wear.
Replace the housing if cracks are evident.
Before installing the flywheel housing, examine
the crankshaft flange for damage or presence of
foreign particles. Failure to heed this caution may
result in engine damage.
1. Crankshaft Gear
2. Intermediate Idler
Gearset
3. Adjustable Idler Gear
4. Camshaft Gear
5. Lower Idler Gear
6. Tandem Pump Drive
Gear
7. Air Compressor Drive
Gear
8. PTO Drive Gear
1. Timing Gear Cover
2. Cover Seals, Upper
3. Cover Sealing Strip
4. Flywheel Housing
5. Crankshaft Seal
6. REPTO Housing Cover
and Seal