User Manual

Page 5-18
200 BENCH PROCEDURES
The piston crown, skirt and rod are marked
FRONT. Be sure that rod, piston crown and skirt
are properly aligned.
Figure 5-17 — Piston Markings
3. Using a generous amount of clean engine
oil, push piston wrist pin into piston wrist pin
bore, aligning two piston sections and
connecting rod.
4. Secure pin in position by inserting a snap
ring in remaining piston snap ring groove.
5. Place the assembled piston in a clean
location until it is needed for installation into
sleeve.
6. Perform steps 1 through 5 on remaining
pistons.
[213 CH] CAMSHAFT
Description
The gear-driven carbon steel E7 camshaft, with
its large journal bearing diameter of 2.689 inches
(68.301 mm), provides excellent bearing unit
loading and allows the use of large, durable
camshaft lobes. E7 engine camshaft gears are
pressed onto the camshaft.
Disassembly
An extremely tight interference fit holds the cam
gears onto the camshaft. Ten tons of force are
required to remove the gears. When cam gear
installation or removal is required, use the
following procedures.
A considerable amount of force may be
necessary to remove damaged or spun gears.
DO NOT apply more than 25 tons (22.7 metric
tons) of force to gears. Doing so may shatter
the gears and result in severe personal injury.
Refer to Figure 5-18.
1. Position two adequate steel plates on the
press to support camshaft gears. The plates
should have a 2-1/2 inch (63.5 mm) hole cut
out in the center when placed side by side,
or similar size V-grooves, to allow clearance
for the shaft journals and greater support for
the gears.
2. Set camshaft, supported by the gears, into
the press.
3. Using a suitable arbor, press camshaft out of
camshaft gear and fuel injection pump drive
gear.
200330a
5-101.bk Page 18 Friday, March 17, 2006 11:05 AM