Shindaiwa 357 Manuel de service télécharger pdf (Page 108)

Q Shindaiwa Inc. 1995

108

LUB-56

All Shindaiwa saws feature Mikuni™ positive

displacement oil pumps. See the accompany-

ing Table for specific applications.

The pump is driven by a worm gear at-

tached to the saw’s clutch drum, and delivers

oil to the guide bar only when the clutch is

engaged and the saw chain is moving.

The pump shaft is spring loaded and has a

bevel at one end, causing the shaft to travel

fore-and-aft in the pump body bore and

function as a piston whenever the shaft is

rotated (Figure 11.1).

Except for Model 357, pump flow rate on all

saws can be regulated by turning an

adjuster

shaft

to increase or decrease pump shaft stroke

Section 11 Oil Pumps

Operation

Spring loading forces the

beveled pump shaft

against the adjuster.

LUB-57

Discharge

Suction

As the pump

shaft rotates, the

bevel causes the

shaft to recipro-

cate within the

pump body bore.

Figure 11.1 Oil Pump Operation

Figure 11.2 Pump Components and Flow Routing (installation may vary)

LUB-54

Crankcase Oil passage

Pump

Grommet

Bar Pad

Elbow

Suction

Hose

Tank Vent

Discharge Port

Spring

Bevel

Ramp

Adjuster

Pump Shaft

OIL PUMPS

Oil Pump Part Numbers

Pump Output @ Max.

Model Part No. (cc/min)

300, 300S 22154-55200 16.5

360, 377 22156-55200 15

357 72320-55200 10

488, 575, 577

680, 695

22160-55200 16.5

757 22169-55200 12.6

Filter

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Shindaiwa 357 Manuel de service Page 108

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