Check Orifice For Clogging

CHECK ORIFICE FOR CLOGGING

Work Procedure


CAUTION:
- Clean surrounding areas of oil injection jack using steam before starting operation, since there may be mud on it.
- Clean oil pressure gauge (SST: KV-40108000) jack with steam before use.
1.Remove protector of PPMU.
2.Remove cap of oil injection jack.





3.Install an oil pressure gauge (SST: KV-40108000) (A) to oil injection jack.

CAUTION:
- Jack must be securely inserted until a click sound can be heard.
- Pressure reducing valve (B) of the oil pressure gauge must be closed.





4.Loosen needle valves A, C, and E of PPMU by approximately 2
rotations.

CAUTION:
Never loosen the needle valve more than required.
5.Lift up the vehicle.

CAUTION:
Check that tires never contact the ground.
6.Tighten needle valves A, C, and E of PPMU.
7.Lift down the vehicle.

CAUTION:
Check that the lift is fully lowered.





8.Loosen pressure reducing valve (A) of oil pressure gauge and then lower pressure.

CAUTION:
Be careful since oil drains swiftly from oil drain hole (B).
9.Check that reading of oil pressure gauge is 0 MPa. Close pressure reducing valve.
10.Loosen needle valve E of PPMU by approximately 2 rotations.

CAUTION:
Never loosen the needle valve more than required.
11.Write down a value of the oil pressure gauge.
12.Tighten needle valve E of PPMU.
13.Loosen pressure reducing valve of oil pressure gauge and then lower pressure.

CAUTION:
Be careful since oil drains swiftly from oil drain hole.
14.Check that reading of oil pressure gauge is 0 MPa. Close pressure reducing valve.
15.Loosen needle valve A of PPMU by approximately 2 rotations.

CAUTION:
Never loosen the needle valve more than required.
16.Read a value of the oil pressure gauge after 5 minutes.
17.Compare difference of reading with pressure reading in step 11.





18.Tighten needle valve A of PPMU.
19.Loosen pressure reducing valve of oil pressure gauge and then lower pressure.

CAUTION:
Be careful since oil drains swiftly from oil drain hole.
20.Check that reading of oil pressure gauge is 0 MPa. Close pressure reducing valve.
21.Loosen needle valve C of PPMU by approximately 2 rotations.

CAUTION:
Never loosen the needle valve more than required.
22.Read a value of the oil pressure gauge after 5 minutes.
23.Compare difference of reading with pressure reading in step 11.





24.Tighten needle valve C of PPMU.
25.Loosen pressure reducing valve of oil pressure gauge and then lower pressure.

CAUTION:
Be careful since oil drains swiftly from oil drain hole.
26.Check that reading of oil pressure gauge is 0 MPa.
27.Remove oil pressure gauge.
28.Tighten needle valves A, C, and E of PPMU to the specified torque.