Finn HydroSeeder T60-II MD, Руководство по эксплуатации и каталог запасных частей

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23
HYDRAULIC SYSTEM
The hydraulic system on your FINN HydroSeeder® is designed to give trouble-free service when
properly maintained. The most important areas of maintenance are the hydraulic oil and filtration.
The reservoir holds 8 gal (30 L) of ISO Grade 46 Oil. Hydraulic oil should be replaced per the
lubrication schedule or if the oil becomes milky or gives off a burnt odor. The hydraulic oil filter
must be replaced on schedule with a 25 micron absolute filter – FINN part number 021618. The
hydraulic system relief is factory-set at 2,250 psi (15,513 kPa).
PUMP MAINTENANCE
NOTE:
Refer to Figure 5 on page 25 for callouts on pages 23 and 24.
CAUTION
Pump maintenance should be done only while engine is not running and battery cables are
disconnected. Failure to comply could result in minor or moderate personal injury. Failure
to comply could also result in product or property damage.
A. FACTORY TOLERANCES
1. To check pump tolerances, loosen the two clamps on pump suction piping and remove inlet
elbow. Through the pump suction hole, insert a feeler gauge between the pump impeller
(3) and the pump suction cover (1). This measurement on a new pump is between 0.030 to
0.045 in. (0.762 to 1.14 mm).
CAUTION
Tightening of the bolts should be performed in a criss-cross pattern. DO NOT TIGHTEN
OVER 15 lb-ft (20 N•m). Overtightening will crack the flange of the pump suction cover.
B. IMPELLER CLEARANCE – TO BRING THE PUMP BACK TO PROPER TOLERANCE,
PROCEED AS FOLLOWS:
1. Loosen four bolts (1B) and push pump suction cover (1) into pump casing (5) until pump
suction cover touches the pump impeller (3). Pump impeller should be in full contact with
pump suction cover.
2. Tighten eight bolts (5B), finger-tight. Pump impeller should rub the pump suction cover and
not turn easily through one revolution.
3. Tighten four bolts (1B), hand-tight until they touch the pump casing (5).
4. Back off eight bolts (5B) 1-1/2 turn.
5. Tighten four bolts (1B) 1-1/2 turn and tighten four nuts (1N) to 15 lb-ft (20 N•m).
6. Tighten eight bolts (5B) to 15 lb-ft (20 N•m). Clearance gap should be about 0.040 in. (1.00
mm). Check to make sure pump impeller turns freely through one revolution.