Yanmar 4JH4E - Lubricating Oil System (Trochoid Pump)

13. Service standards
326
13.3 Lubricating oil system (Trochoid pump)
(1) Outside clearance of outer rotor
(2) Tip clearance between outer rotor and inner rotor
(3) Side clearance of outer rotor
(4) Inside clearance of inner rotor
mm
Standard Limit Reference page
0.12-0.21 0.30 8.2.4(1)
mm
Standard Limit Reference page
- 0.16 8.2.4(2)
mm
Standard Limit Reference page
0.02-0.07 0.12 8.2.4(3)
mm
Item Parts Standard Standard Limit
Reference
page
Inside clearance
of inner rotor
Gear boss diameter 53.05-53.15
0.3-0.5 0.6
8.2.4(4)
Rotor diameter 53.45-53.55
Width across flat
clearance of inner
rotor
Width across flat of
gear boss
49.45-49.75
0.2-0.6 0.7
Width across flat of
rotor
49.95-50.05