H. 5 Remove Outboard Cover (Suction Side) – See Figures 3, 4 and 5
Remove cap screws (40) with Dyna seals (41) from outboard cover (36). Pull out- board
cover slightly away from case (1) to release oil from inlet chamber of pump. Provisions must
be made for oil spillage. Rotate power rotor (23) in opposite direction from normal to drain
trapped fluid. Remove Dyna seals (41) from capped screws (40). Clean cap screws using
LOCTITE Gasket Eliminator 504. Remove outboard cover (36) with sub-assembly from inlet
head (21).
NOTE:
The outboard cover (36) and sub-assembly consists of O-rings (14 & 19), plug (20),
plate sub-assembly (38) and cap screws (43) with lockwashers (42).
Remove cap screws (43) and lock washers (42) and plate sub-assembly (38) from
outboard cover (36). Remove O-rings (14 & 17) from grooves of outboard cover.
H. 6 Remove Inlet Head (Suction Side)
Remove cap screws (39) and washers (60) and inlet head (21) from case (1). Re- move O-
rings (13 & 19) from grooves in case (1).
H. 7 Remove Idler Rotors and Bearing Retainer
Remove idler rotors (67, 75 & 33) from bores of rotor housings (3 & 4) by rotating power rotor
in the opposite direction of normal rotation. This will unscrew and release the idler rotors from
the power rotor.
NOTE:
Do not permit the idler rotors to drop as they emerge from housing (3).
Remove hex bolts (30) and bearing retainer (29) from inboard cover (12).
H. 8 Remove and Disassemble Power Rotor
Remove assembled power rotor (23) from pump. Disassemble power rotor assembly
(23) as follows:
a. Remove bearing nut (31) and washer (32).
b. Using a bearing puller or arbor press remove ball bearing (28).
c. Remove Truarc ring (25) from groove of power rotor (23).
d. Remove spacer sub-assembly (64). Removal of spacer sub assembly (64) includes
removal of spacer (62), spring pin (63) and mechanical seal stationary seat and O-ring
(1 & 2) of Figure 2.
e. Remove mechanical seal seat (1) and O-ring (2) of Figure 2 from spacer (62).
f. Loosen set-screws (see Figure 2, (3C)) and slide mechanical seal rotating assembly
(Figure 2, (3)) from power rotor (23).
6
Summary of Contents for IMO E12L Series
Page 14: ...CAUTION ARROW TO LINE UP WITH EYEBOLTS FIGURE 3 PUMP ASSEMBLY ROTOR SIZE 118 Page 11 ...
Page 15: ...FIGURE 4 PUMP ASSEMBLY ROTOR SIZES 137 156 CAUTION ARROW TO LINE UP WITH EYEBOLTS Page 12 ...
Page 16: ...CAUTION ARROW TO LINE UP WITH EYEBOLTS FIGURE 5 PUMP ASSEMBLY ROTOR SIZES 187 200 Page 13 ...
