Fluke Calibration 4322-SYS-NAVAIR, Service Manual

Page: 111 / 186

Intensifier Maintenance
Intensifier Part Replacement
5
5-17
Pump Cam Disassembly
Use the following instructions and Figure 5-6 to disassemble the pump cam assembly:
Note
This procedure supplies instructions on how to completely disassemble the
entire pump cam assembly. Many procedures only requires the pump cam
assembly to be partially disassembled. Only perform the amount of steps
required to remove the part or subassembly from the pump cam assembly to
prevent extra work.
1. Remove the chassis and separate the chassis. See “Chassis” on page 5-11.
2. Remove pump cam assembly from the booster pump assembly housing. See “Pump
Cam” on page 5-14.
3. Position the cam assembly so that the planetary gears are facing down.
4. Remove the 12 screws and lock washers (items

and

) that secures the upper
cam mount plate (

) to the lower cam mount plate (

).
5. Remove the four screws (

) that secures the upper shaft bearing hub (

) to the
upper piston guide plate (

).
6. Carefully lift the and remove the upper cam mount plate (

).
7. Remove the upper wave spring (

).
8. Remove the 16 screws (

) that secure the upper piston guide plate (

) to the
piston guide rail spacers (

).
Note
These are the two sets closest to the inside of the hub (socket head screws).
9. Lift and remove the upper piston guide plate (

).
10. To remove the cam - flip the cam assembly upside down and remove the 12 screws
and lock washers (items

and

) from the bottom side of the lower cam mount
plate (

).
11. Lift and remove the cam (

).
12. Lift and remove the ICM and shaft assembly (

).The assembly is free to lift out
from the cam housing, but it may require a gentle nudge. While grabbing the
opposite sides of the cam plate, gently tap the whole assembly down against the
work surface. This will help push the shaft / guide plate assembly out from the cam
housing.