Mack E7, Руководство по обслуживанию

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200 BENCH PROCEDURES
Page 5-35
Refer to Figure 5-42.
1. Using depth measurement tool (1), measure
distance from cylinder head surface (2) to
point on insert where groove will be ground.
This point should be approximately 0.060 inch
(1.524 mm) below any angular face on valve seat
insert.
Figure 5-42 — Valve Insert Depth Measurement
Refer to Figure 5-43.
2. Install grinding wheel (2) into grinder (4) and
set depth of grinder base (1) to dimension
found in preceding step.
3. Secure base to grinder by tightening hex-
head screw (3).
Figure 5-43 — Setting Depth of Grinder
4. Grind a groove around inside circumference
of valve seat insert. This groove should be
approximately 0.030 inch (0.762 mm) deep.
Use care not to damage any machined surface of
the cylinder head.
5. Attach collet to T-handle and shaft
assembly.
6. Position collet in valve seat insert so ridge of
collet will be inside groove. Turn T-handle to
fully expand collet.
Refer to Figure 5-44.
7. Position lifting bridge (3) under crank handle
(2). Turn crank handle clockwise to remove
insert.
8. Release insert from collet (4) by slightly
turning T-handle (1).
Figure 5-44 — Removing Valve Insert
1. Depth measurement
tool
2. Cylinder head surface
1. Grinder base
2. Grinding wheel
3. Hex-head screw
4. Grinder
200299a
1
2
200300a
1
2
3
4
1. T-handle
2. Crank handle
3. Lifting bridge
4. Collet
5-101.bk Page 35 Friday, March 17, 2006 11:05 AM