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 TM 9-2815-220-24
INTAKE AND EXHAUST VALVE TIMING PROCEDURE
THIS WORK PACKAGE COVERS:
Introduction, Removal, Timing Check, Timing Adjustment, and Installation
INITIAL SETUP:
Tools:
Fabricated Items:
Breaker bar, 3/4-inch used with 2DR engine
Engine (front end) turning tool, 2DR only
turning tools (tool crib)
(item 3, WP 0177)
Engine (flywheel) turning tool, for 2CA/2DA:
Mandatory Replacement Parts:
splined wrench (item 136, WP 0176)
Gasket (item 329, WP 0175)
General mechanic's tool kit (item 121, WP 0176)
Gasket (2) (item 350, WP 0175)
Mechanical puller (item 89, WP 0176)
Retaining ring (item 12, WP 0175)
Thickness gauge blade (0.010) (item 55,
Expendable and Durable Items:
Lubriplate (item 23, WP 0173)
Thickness gauge blade (0.100) (item 57,
Personnel Required:
Torque wrench, 0-300 inch-pounds (item 124,
Track Vehicle Repairer (2) 63H10
Equipment Conditions:
Fabricated Items:
Engine removed from vehicle and placed on a
Engine (flywheel) turning tool, 2DR only (item 4,
flat stationary surface
INTRODUCTION
Valve timing is checked with cylinder numbers 6R and 6L intake valve clearance set at 0.100-
inch. The flywheel is stamped with timing marks "6R INT CLOSE 0.100 CLR" for timing the
right camshaft with the crankshaft, and marked "6L INT CLOSE 0.100 CLR" for timing the
left camshaft with the crankshaft.
Flywheels: 2CA and 2DA are the same; however, 2DRs are different and are not
interchangeable. Timing markings, described above, are identical. However, on Models 2CA
and 2DA, a timing pointer is affixed to the transmission housing, while on Model 2DR there
are scribed markings on the transmission housing.
For instructional purposes, the timing of the right camshaft on a 2DR Model is described and
illustrated. Right and left camshaft timing is identical. Timing on all models is identical.
Models 2CA, 2CB, and 2DA
Model 2DR
Flywheel and Pointer
Flywheel/Transmission housing timing marks.
WP 0035 00-1
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