Parts Inspection And Measurement; Trochoid Pump Inspection And Measurement - Takeuchi TB 175 Handbuch

5. Lubrication System

5.5 Parts Inspection and measurement

5.5.1 Trochoid pump inspection and measurement

(1) Outside clearance and side clearance of
outer rotor
Insert a gap gage between a outer rotor and a pump
body, and measure the clearance.
Outside clearance
Model
3TNV82A to 88 0.12 to 0.21
4TNV94L/98 0.100 to 0.155
4TNV106(T) 0.100 to 0.165
(2) Tip clearance between outer rotor and
inner rotor
Insert a gap gage between an outer rotor and an inner
rotor, and measure the tip clearance.
Tip clearance
Standard
-
(3) Side clearance of outer rotor
When measuring a side clearance, put a right-angle gage to the pump body, insert a gap gage and measure
the clearance.
Side clearance
Model
3TNV82A to 88 0.02 to 0.07
4TNV94L/98 0.05 to 0.10
4TNV106(T) 0.03 to 0.12
(R.1)
Standard Limit
0.30
0.25
0.25
mm
Limit
0.16
Standard Limit
0.12
0.15
0.17
Gear case
mm
Outer diameter clearance
mm
110
Outer rotor
Side clearance