Tappets And Tappet Housings - Kohler KDI 1903M Workshop Manual

INFORMATION ABOUT OVERHAULING
8.2.7 Camshaft control for 3 cylinder engine
With a micrometer, measure the maximum dimensions of intake
camshaft R and exhaust camshaft S (Tab. 8.3b).
The MAX value of wear allowed is 0.1 mm.
Important
•
Tab. 8.3b details the dimensional values of new components
only.
Fig 8.6

8.3 Tappets and tappet housings

8.3.1 Tappets check
Use a surface plate and a dial gauge as shown in Fig. 8.7.
Check the perpendicularity of the plate C, making the tappet
D rotate in the direction of the arrow.
The MAX value of wear allowed is 0.02 mm.
With a gauge, check the length of value A and B (Tab. 8.4).
The MAX value of wear allowed is 0.08 mm.
8.3.2 Tappet housing check
Use an internal dial gauge to measure the diameter of the
tappet housings X.
Use value of A detected (Par. 8.3.1) to calculate the
clearance value (Tab. 8.4).
If the clearance values are not observed, replace the worn
component.
Important
•
Rotate the crankshaft clockwise
reference X upwards.
Fig 8.7
Fig 8.8
ST_34 tool bringing
Tab 8.3b Camshaft
dimensions
REF. DIMENSIONS (mm)
R 32.834 - 32.896
S 33.335 - 33.397
8
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