CITROËN GSA Repair Manual page 18

OPERATION No.GX. 02 : Work on the hydraulic system
5. PRECAUTIONS TO BE TAKEN BEFORE ANY WORK ON THE HYDRAULIC CIRCUIT
a ) Carefully clean the working zone. unions and components to be removed.
- Disconnect the negative battery lead.
- Use petrol or lead-free petrol for cleaning. to the exclusion of any other product.
b ) Reduce pressure in the circuits (see Op. GX. 390-00. page 9).
6. PRECAUTIONS DURING REMOVAL
a ) Blank off metal pipes using plugs and rubber pipes using cylindrical pins of appropriate diameter.
b ) Blank off the orifices of components with appropriate plugs.
NOTE : All plugs and pins must be carefully cleaned before use.
7. TESTING HYDRAULIC EQUIPMENT
Use the 3654-T test bench designed for use with LHM fluid.
- The bench is painted green. and all bench accessories carry a green mark.
Never use the bench with an alternative fluid, or to check equipment operating with another fluid (such as equipment in a
type « D » vehicle, using LHS 2 fluid ).
NOTE : The « Le Bozec » pump used on test bench for Diesel engine injectors, can be employed. after appropriate
cleaning, for testing equipment using LHM fluid.
8. PRECAUTIONS DURING REFITTING
a ) Cleaning
- steel pipes must be blown through with compressed air.
- rubber pipes and seals must be washed in petrol or lead-free petrol and blown through with compressed air.
- hydraulic components must be cleaned with petrol or lead-free petrol and blown through with compressed air.
NOTE : Seals must be replaced following any intervention on the hydraulic circuit.
b ) Lubrication :
- Follow the instructions given in the Repair Manual.
Seals and internal parts must be moistened before assembly ( use LHM fluid only).
grease).
Op. GX. 02 3