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4. Maintenance4.4 Assembly
4.4.5 Fitting timing gears
Step 1
Slide timing gears (36) onto shafts (24 and 25), realigning timing marks.
Step 4
Timing adjustment is now required:Timing adjustment is now required:
Timing adjustment is now required:Timing adjustment is now required:
Timing adjustment is now required:
Tighten one clamp plate/torque locking assembly only,
allowing rotation of the shaft in the other gear for timing
adjustment. See Adjusting Rotor Timing section 4.4.6.
4.4.4 Checking rotor abutment alignment
Step 1
Incorrect setting of rotor alignment will damage the pump.
Fit rotors onto shafts (24 and 25) and tighten rotor retention nuts (22).
Step 2
1. Using a depth micrometer ensure axial alignment is within
tolerance of 0.012mm
(0.0005 in)
.
2. If the alignment is incorrect, the shaft abutment spacer (27)
must be replaced/machined.
Step 2
1. Before fitting the torque locking devices (38) lubricate them
with gear oil. Models S1, 2 and 3 high pressure pumps
have two sets of elements.
2. Models S4, 5 and 6 pumps have torque locking
assemblies.
Step 3
Fit timing gear clamp plates (39) - models S1, 2 and 3 only.
