Underside Of Vehicle And Engine Compartment; Power-Assisted Steering - Porsche Boxster 1999 Technical Manual

Boxster Maintenance
Underside of vehicle and engine
compartment
Visual inspection for leaks (oils and fluids)
and abrasion (lines and hoses)
Power-assisted steering
Checking the fluid level
132-96
General
Check the fluid level (Pentosin CHF 11 S) when
the engine is not running and when it is
cold (approx. 20 °CJ.*
1. Open the engine cover. Open the cap of the
reservoir. *
Damage to the power-assisted steering is
caused by a shortage of oil in the hydraulic
system. Even small leaks can cause the fluid
to escape and damage the servo pump as
a result of the high oil pressure occurring
in the hydraulic circuit.
Grunt-like noises when the steering is locked
or foam formation in the reservoir indicates
a shortage of oil and/or that air has also
been sucked in. However, before topping
up the reservoir, remedy any leaks on the
suctiqn side and replace the faulty part on
the pressure side.
2. Wipe off the dipstick.
Close and then reopen the cap. The fluid level
should be in the shaded area below the "Cold"
marking (marking = max. level at 20 °C).
Top up with Pentosin if necessary. *
The top marking "Hot" is intended
for a fluid temperature of 80 °c.
Checking the fluid level for the power-
assisted steering
The reservoir is located in the engine
compartment. There are two markings
on th~ dipstick located on the reservoir cap.
Here,! the marking "Cold" for the cold engine
(approx. 20 °C) is on one side and the marking
for the hot engine "Hot' (approx. 80 °C) is on
the other side.
* When topping up or filling in Pentosin,
make sure that Pentosin does not come
into contact with the coolant hoses!
Observe the specifications in order to avoid
overfilling and therefore overflowing.
If coolant hoses come into contact with
Pentosin, thoroughly clean them with
water IMMEDIATELY!
Replace visibly swollen coolant hoses!
03-3
03 20 00 Maintenance
Printed in Germany -20, 1998
986031