Cub-cadet P Series Manuel d'utilisateur télécharger pdf (Page 24)

19P Series

FLUID VOLUME AND LEVEL

Certain situations may require additional uid to

be added or even replaced. Refer to the vehicle

manufacturer’s recommendations for the proper ll

location and level. After maintenance or oil change,

follow purging procedures below and check the

uid level once the unit has been operated for ap-

proximately 1 minute.

FLUID CHANGE

In the event of oil contamination or degradation,

oil addition or change may alleviate certain per-

formance problems. Refer to the vehicle manufac-

turer’s recommended oil change frequency. Refer to

purging procedures below after changing uids.

FILTERS

An inlet lter is required to insure that only clean uid

enters the system. Refer to the vehicle manufacture

for approved lter replacement.

PURGING PROCEDURES

Due to the effects air has on efciency in hydrostatic

drive applications, it is critical that air is removed or

purged from the system.

These purge procedures must be preformed any-

time a hydrostatic system has been opened for

maintenance or repair, or if any additional oil has

been added to the system.

Air creates inefciency because it has compres-

sion and expansion rates that are higher than that

of oil.

Air trapped in the oil may cause the following

symptoms:

1. Noisy operation.

2. Lack of power or drive after short-term

operation.

3. High operation temperature and excessive

expansion of oil.

Before starting, make sure the reservoir is at the

proper oil level. If it is not, ll to the vehicle manu-

facturer’s specications.

The following procedures should be performed

with the vehicle drive wheels off the ground, then

repeated under normal operating conditions.

WARNING

POTENTIAL FOR SERIOUS INJURY

Certain procedures require the vehicle

engine to be operated and the vehicle to

be raised off of the ground. To prevent

possible injury to the servicing techni-

cian and/or bystanders, insure the ve-

hicle is properly secured.

1. With the bypass valve open and the engine

running, slowly move the directional control

in both forward and reverse directions (5 to 6

times). As air is purged from the unit, the oil level

in the reservoir will drop.

2. With the bypass valve closed and the engine

running, slowly move the directional control

in both forward and reverse directions (5 to

6 times). Check the oil level, and add oil as

required after stopping engine.

3. It may be necessary to repeat steps 1 and

2 until all the air is completely purged from

the system. When the P Series Pump moves

forward and reverse at normal speed and the

reservoir oil remains at a constant level, purging

is complete.

Cleanliness is a key factor in the successful repair of

pumps. Thoroughly clean all exposed surfaces prior

to any type of maintenance. Cleaning of all parts

by using a solvent wash and air drying is usually

adequate. As with any precision equipment, all parts

must be kept free of foreign material and chemicals.

Protect all exposed sealing areas and open cavities

from damage and foreign material.

Upon removal, all seals, O-rings, and gaskets

should be replaced. During installation, lightly lu-

bricate all seals, O-rings, and gaskets with clean

petroleum jelly prior to assembly. Also protect the

inner diameter of seals by covering the shaft ma-

chined features with plastic wrap or equivalent.

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Cub-cadet P Series Manuel d'utilisateur Page 24

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