Disassembly and Assembly
Disassembly and Assembly (Models with VK45DE)COMPONENT:
INSPECTION BEFORE DISASSEMBLY
Disassemble oil pump only when the following malfunctions occur.
^ If oil leakage is found on oil pump.
^ Oil pump pulley is damaged or deformed.
^ Performance of oil pump is low.
DISASSEMBLY
NOTE: Secure oil pump in a vise if necessary.
CAUTION: Use copper plates when securing in a vise.
1. Remove rear cover mounting bolts, and then remove rear cover from body assembly
2. Remove gasket from body assembly.
3. Remove dowel pin, cartridge and side plate from body assembly.
4. Remove pulley mounting nut and washer, then remove pulley from drive shaft.
5. Remove snap ring from drive shaft and press out it.
CAUTION: When removing snap ring, be careful not to damage drive shaft.
6. Remove oil seal from body assembly using a flat-bladed screwdriver.
7. Remove O-ring C from body assembly.
8. Remove lock nut, and then remove copper washer, joint and 0ring A.
9. Remove connector bolt, and then remove O-ring A, flow control valve and spring from body assembly
10. Remove mounting bolts of suction pipe, and then remove suction pipe from body assembly.
11. Remove O-ring B from body assembly
ASSEMBLY
NOTE: Secure oil pump in a vise if necessary.
CAUTION: Use copper plates when securing in a vise.
1. Apply multi-purpose grease to oil seal lips (1). Apply Genuine Nissan PSF or equivalent to around oil seal, and then install oil seal to body assembly
2. Apply Genuine Nissan PSF or equivalent to drive shaft, and press drive shaft into body assembly, then install snap ring.
3. Apply Genuine Nissan PSF or equivalent to O-ring C, and install O-ring C into body assembly.
4. Install side plate to body assembly.
5. Install dowel pin (3) into dowel pin hole (A), and install cam ring (2) pointing it's D1 side toward the body assembly (1) side as shown in the figure.
^ When installing cam ring, turn carved face with a letter E (B) of it to rear cover.
CAUTION: Do not confuse the assembling direction of cam ring. If cam ring is installed facing the incorrect direction, it may cause oil pump operation malfunction.
6. Install rotor to body assembly
^ When installing rotor, turn mark face on rotor to body assembly
7. Install vane to rotor so that arc of vane faces cam ring side.
8. Check if drive shaft turns smoothly
9. Install gasket to body assembly.
10. Install rear cover to body assembly, and then tighten mounting bolts to the specified torque.
11. Install pulley and washer to drive shaft, and then tighten lock nut at the specified torque.
12. Install spring, flow control valve and O-ring A to body assembly, and then tighten connector bolt to the specified torque.
13. Install O-ring A, joint and copper washer to connector bolt, and then tighten lock nut to the specified torque.
14. Apply Genuine Nissan PSF or equivalent to O-ring B, and then install O-ring B to body assembly
15. Install suction pipe to body assembly.