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TM 10-4320-342-24
3-20. PUMP AND CLUTCH (200 GPM FUEL PUMP) REPAIR - continued.
Refer to Figure 3-26.
(23)
Use formula S - T - U = V to determine thickness of shim stack number four (1).
(a)
Measure from flange of clutch housing (2) to top of clutch rotor (3) to determine dimension S.
(b)
Measure from flange of bearing carrier (4) to topside of clutch armature (5) to determine dimension T.
Subtract dimension T.
(c)
Subtract dimension U. Dimension U is constant. U = 0.500.
(d)
Dimension V is the required thickness of shim stack number four (1) based on the above.
(e)
Example of formula: 1.985 - 1.895 - 0.050 = 0.040
(24)
Select shim stack number four (1).
NOTE
One or more shims may be used to obtain dimension V above. Shims are made up
of laminated layers and thickness of each layer is 0.002.
(a)
Select appropriate number of shims to obtain dimension V above.
(b)
If necessary, peel appropriate number of laminated layers (6) from shim to achieve dimension V above.
(25)
Remove nut (7), flat washer (8) and assembled armature unit (9) from shaft (10).
(26)
Install key (11) in keyway on shaft (10).
(27)
Install shim stack number four (1), spring washer (12) and assembled armature unit (9) on shaft (10) and press
into position.
(28)
Install flat washer (8) and nut (7) on shaft (10). Torque nut 220 to 240 inch-pounds.
(29)
Press bearing (13) on shaft (10).
3-63
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