TM 10-4610-244-13
TM 09476B-13/1
5-7. REPAIR UPPER HOUSING ASSEMBLY (Cont'd).
(6)
Compress spring (5) and place retaining washer (4) onto arm retainer (8), snapping into grooves
(7)
Insert bal-valve (11) into threaded hole In housing, using slow firm pressure to carefully force preformed
packing (12) past threads of hole
(8)
Screw bal-valve (11) into threaded hole in housing until head bottoms out
(9)
Insert R-valve (9) into hole in housing
(10)
Back locknut on R-valve (9) away from housing
(11)
Screw R-valve (9) into threaded hole three turns.
(12)
Set timing of R-valve (9) by
(a) Rotate cam (1) until arm (2) is 0 005 to 0
010 inches from needle (3) Hold in this
position.
(b)Screw R-valve (4) in until its piston just seats.
This is the point at which arm (2) will just begin to
move away from face of arm retainer (6).
(c)Tighten lock nut (5) to hold R-valve (4) in
position.
(d)Hold this position of cam (1) and check
clearance between needle (3) and arm (2).
(e)Readjust R-valve (4) if necessary to obtain
0.005 to 0.010 inch clearance when R-valve has
just closed.
(13)
Place new gasket (3) around top of housing.
(14)
Place cover (2) on housing.
(15)
Fasten cover (2) into place with hex head screws
(1).
5-8
