Fristam Pumps
0
propriate wrench to the torque specified in Table A, page 5.
k) Now place the
wooden dowel
between the ro-
tors as shown in
Figure 7.
l) Tighten the
second rotor bolt
clockwise with
the appropriate
wrench to the
torque specified
in Table A, page
53. Rotate the in-
put shaft to verify
that the pump
turns freely.
With the rotors
installed, you may
check the rotor gap.
Use feeler gauges
to verify the back
clearance between the rotors and the housing (see Table A3, page 54). You need to do this for both
shafts. The values for each shaft may, and probably will, be different. Subtract the clearance value that
you measure from the clearance value that is listed in the table. This will give you the amount of shim
material that you must remove. This can be accomplished by removing the shims currently in the
pump and using a combination of the shims that were acquired from Fristam.
Once you have your rotor to housing measurements, you can remove the rotors, pump housing and
remove both pump shafts from the gearbox. You will also need to remove the outer races for the front
bearings to remove the current shims and replace them with the shim values that you have determined
for each shaft.
I
NSTALL
ThE
g
EARbOx
Once the shims are
determined, you can
reassemble the gearbox.
Lightly oil the pump
shafts on the step for
the gears. Install the
shafts, one at a time,
into the gearbox. Re-
member that the idle
shaft will be in the bot-
tom bore as seen from
the pump side of the
gearbox with the gear-
box cover on the left.
a) Slide the front gear
spacer onto the
shaft.
b) Deburr and install
the gear key into
1265000099
2/5/03
Figure 5
SHIMS
IL-0580
4/16/01
SHIMS
Figure 6