Yanmar 4LHA-HTP Operation Manual page 401

Chapter 3 Fuel Injection Equipment
9. Pump Reassembly, Adjustment and Inspection
9. Pump Reassembly, Adjustment and Inspection
Fig. 1
Fig. 2
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Fig. 3
2. Roller Height
When reassembling the roller holder, select
the roller so that the difference in height (See
(The roller holder is delivered as a pre-adjusted
assembly.)
Difference in roller height:
3. Distributor Head Inspection
Center
plug a) Plunger barrel movement.
3-1-44
1. Feed Pump Assembly
Set the rotor and blades inside the liner as a
unit, so that their axial clearance will be within
the specified tolerance. (The feed pump is deli-
vered as a pre-adjusted assembly.)
Clearance between liner and rotor : A
0.010-0.020 mm.
Clearance between liner and blades: B
0.010-0.020 mm.
Fig. 2) will be within the specified tolerance.
±0.02 mm.
With the center plug tightened to the head
at the specified torque 58.8-78.5 N-m(6-8
kgf.m) insert the plunger into the barrel.
C o n f i r m that in any position the plunger
slides smoothly in the barrel.
i 4LHA Series