Install servo plate (10) to stem (6) with tw o #10-24 button head screws (8). Torque
to 30 lbs-in., 3,4 Nm. Install two set screws (25) in servo plate. Torque to 25 lbs-in., 2,8
Nm.
NOTE:
The balance plate cannot be assembled to the rocker cam until after the
housing assembly installation has been completed See figure 7.
Install creep plate (5) over center post on rocker (21).
Insert piston and shoes into retainer and install entire assemb ly (4) against creep
plate.
Install thrust washer (2) over center post of cam and against shoe retainer . Grooved
side of washer must face shoe retainer.
Install the thickest retaining ring (1) that will fit in the g roove on the rocker cam center
post which will allow a maximum clearance of 0.002-0.005”, 0,05-0,13 mm between
the creep plate and shoe faces. To check this clearance, grasp one piston and lift until
tight against shoe retainer. Insert thickness gage. If this clearance is not correct, select
the appropriate retaining ring and repeat the checking procedure.
NOTE:
If metallic thickness gage is used, caution should be e xercised not to scratch
shoe face. There are five different retaining rings available for this tolerance. Each
retaining ring is marked: 0.081-0.079”, 2,03-1,98 mm thick blue dot; 0.083-0.081”,
2,08-2,05 mm thick red dot; 0.085-0.083”, 2,159-2,108 mm thick white dot; 0.087-
0.085”, 2,18-2,16 mm thick green dot; and 0.089-0.087”, 2,4-2,21 mm thick yellow
dot. The piston and shoe assembly must be free to rotate 360
0
by hand.
See figure 3
. Install two elbow fittings (3) into the threaded holes in the cr adle.
NOTE:
Check the feed tubes (4) and override tubes (2) by fitting them into the correct
port block holes before assembling to the stroking assembly (5). They must be a snug
push fit as they rely on a metal to metal seal to contain system pressure . If they fit
loose or are damaged they must be replaced.
Install pressure feed tubes (4) to elbow fittings (3). Tighten the connectors until snug.
Position the mounting flange (7) with the large open end f acing up and install two
dowel pins (6) in the cradle mounting surface and one 3/8”, 9,5mm diameter do wel pin
(10) in the outer edge of the flange .
Install the rocker cam and cradle assembly (5) over the dowel pins (6) in the mounting
flange.
NOTE:
Pressure feed tubes to be on the same side of mounting flange center line as
the 3/8”, 9,5 mm diameter dowel pin (10).
With cam and cradle installed, tilt mounting flange on its side and secure with tw o soc.
hd. cap screws (9). Torque to 50 lbs-ft, 67,8 Nm.
Insert plugs (11) with o-rings (8) into soc. hd. cap screw (9) c’bores.
Be sure tapped
hole
in plug (11)
is visible
after installation. This is used for removal.
Install plugs (12) with o-rings (13).
Install shaft assembly
See figure 7
. Install shaft and bearing assembly (1), either splined or keyed as speci-
fied by inserting shaft through bores, a few light taps are required on the outer r ace to
completely engage and seat bearing.
NOTE:
Do not tap on end of shaft, b ut on the bearing outer race only.
ASSEMBLY PROCEDURE
18
FIGURE 3
Tapped hole
this side.
12
CASE
OVERFILL
PORT
13
13
12
AIR
BLEED
PORT
ROCKER CAM ASSEMBLY
(continued)
PISTON AND SHOE ASSEMBLY
MOUNTING FLANGE,
CAM & CRADLE, BARREL &
AUXILIARY SHAFT ASSEMBLY
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