IBM 1403 Field Engineering Maintenance Manual page 54

Figure 43. Hydraulic Unit Oil Flow (No Space-No Skip)
are too tight to start otherwise.) The assembly is
now free to be removed from the hydraulic unit.
Caution: Take extreme care when working on the
reservoir unit. The access hole may have sharp
arl
nat>
,",U.5'-'~·
5. Replace the parts in reverse order.
Hydraulic-Unit Reassembly
1. The channel-plate assembly (Figure 42) should
never be separated from the reservoir mounting
plate (part 475101) unless a pump or motor or
detent block is replaced.
2. Reassemble the channel-plate assembly to the res-
ervoir mounting plate as follows:
a. Insert the holding screws and leave them loose.
54
LEGEND
t'J.:.::'::::,·,i:;::;:;j Normal Fluid Flow
... ::: ........ :.".:.,,' (Low Pressure)
Minimum Fluid Flow
Through Bypass
(Pressure at Equilibrium
with Normal)
b. Place the aligning tool (part 450980) around
the output shaft of the motor and over the boss
on the reservoir mounting plate.
c. This tool ensures that the output shaft is cen-
tered in relation to the outside circumference
of the boss. Consequently, the output shaft will
be in alignment with the supporting-bearing
mounting hole in the side frame.
d. Tighten the holding screws to fasten the chan-
nel-plate assembly to the reservoir mounting
plate.
e. Remove the aligning tool. If the tool cannot be
removed and replaced with complete freedom
from binds, misalignment of the shaft and hub
is indicated. Loosen the holding screws and re-
peat steps band d until the shaft and hub are