TM 9-6115-664-13&P
5-9. CYLINDER HEAD MAINTENANCE
C. REPAIR.
1. Slight scoring of a valve face may be removed by grinding valves with valve grinding machine. Dimensions G, H, and
I must be maintained. Replace valves if grinding results in dimensions beyond limits.
2. Replace valve guides as follows:
a.
Drive valve guides from cylinder head using an arbor press and pressing rod (9.0 mm diameter).
CAUTION
When installing a replacement valve guide, you must ensure that the guide is
aligned square with the bore of the cylinder head. Damage to the guide and
cylinder head will occur if guide is installed at even a slight angle.
b.
Install replacement valve guide into cylinder head using an arbor press and pressing rod. Guide is installed with
stepped shoulder up. Press guide until shoulder of guide is bottomed against casting.
D. INSTALLATION.
1. Mate new gasket (43, Figure 5-3) onto tappet guide
(41). Install tappets (44).
2. Install tappet guide (41) into engine block. Apply a
thin coat of loctite sealant to threads of screws (42)
and install screws. Torque screws to 15 to 17 ft-lbs
(20 to 23 Nm).
3. Apply a light coat of grease to new O-ring seal (40).
Install seal onto tappet guide (41).
4. Align marks on push rod tube (32) and cylinder head
(7). Install tube onto tappet guide (41). Apply a light
coat of grease to new O-ring seal (33) and in tall
seal into cylinder head (7).
5. If removed, install studs (37) into cylinder head (7).
6. Carefully install inlet valve (35) and outlet valve (36)
into valve guides in cylinder head (7). Ensure valves
slide freely in guides.
Figure 5-3. Cylinder Head
(Sheet 5 of 7)
5-28
