Maintenance: Maintenance Porsche Boxster 986 facelift

DRAINING TRANSMISSION OIL

1. Remove sheetmetal brace. Refer to «REMOVING AND INSTALLING SHEETMETAL BRACE»(ref-199511-S09119309322005101900000) .
2. Place oil collection pan under the transmission.
3. Unscrew oil filler screw.
4. Unscrew oil drain plug and drain transmission oil with the vehicle in horizontal position.

1. Remove sheetmetal brace. Refer to «REMOVING AND INSTALLING SHEETMETAL BRACE»(ref-199511-S09119309322005101900000) .
2. Place oil collection pan under the manual transmission.
3. Unscrew oil filler screw.
4. Unscrew oil drainage screw and drain manual transmission oil.

POWER STEERING: CHECK THE FLUID LEVEL

Note. Damage to the power 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. Before filling the reservoir, any existing leaks must be eliminated on the suction side. Alternatively, the defective part on the pressure side should be replaced. The reservoir is located in the engine compartment. Only Pentosin CHF 11 S may be filled into the reservoir. Pentosin CHF 11 S can be ordered with the following part number: Quantity supplied 1 liter = 000.043.203.33. There are two marks on the dipstick located on the reservoir cap. One side bears the mark Cold for a cold engine (approximately 20° C) and the other Hot for a hot engine (approximately 80° C).

Scheme 8

1. Check the fluid level (Pentosin CHF 11 S) with the engine stationary and cold (approx. 20°C).

1. Observe the following specifications in order to avoid overfilling and thus overflowing.
2. Multiple steering operations (manoeuvring) or/and actuating the clutch with the engine switched off change the fluid level in the reservoir. Fluid level rises. In this case, the engine must be run for approx. 20 seconds immediately prior to the fluid level check.
3. If coolant hoses come into contact with Pentosin, thoroughly clean them with water IMMEDIATELY
4. Replace visibly swollen coolant hoses!

1. Start engine and run it at idle speed for approx. 20 seconds. Switch off engine.
2. Open the engine cover.
3. Open reservoir cap.
4. Wipe off the dipstick. Close and then reopen the cap. The fluid level should lie in the hatched area beneath the "Cold" mark (mark = maximum level at 20° C). Top up with Pentosin if necessary. The upper "Hot" mark is intended for a fluid temperature of 80° C. (Scheme 8)

1. Do not add too much Pentosin! The respective marks are for the maximum fluid level at the "COLD" or "HOT" temperature. (Scheme 8)

Note. If assembly work was performed previously, check the fluid level with the engine idling and without operating the steering! Multiple steering operations (manoeuvring) or/and actuating the clutch with the engine switched off change the fluid level in the reservoir. Fluid level rises. In this case, the engine must be run for approx. 20 seconds immediately prior to the fluid level check! When topping up or filling in Pentosin, make sure that it does not come into contact with the coolant hoses! Observe the specifications in order to avoid overfilling and thus overflowing! If coolant hoses come into contact with Pentosin, thoroughly clean them with water IMMEDIATELY! Replace visibly swollen coolant hoses!

CHECKING THE BRAKE FLUID LEVEL

1. Carry out visual inspection of brake fluid level.

Note. The brake fluid level must be between min. and max.! Observe brake-fluid quality. Use only new DO T4 brake fluid! This brake fluid is available under the following part numbers: Quantity supplied 1 liters = 000.043.203.66 container volume. 30 liters = 000.043.203.67. The information applies to vehicles with and without PSM!

CHANGING BRAKE FLUID

Note. Observe brake-fluid quality. Use only new DOT4 brake fluid. The brake-fluid change interval using Super DOT4 brake fluid is two years. This brake fluid is available under the following part numbers: Quantity supplied 1 liters = 000.043.203.66 container volume. 30 liters - 000.043.203.67.

Scheme 9

1. Fill reservoir to its top edge with new brake fluid.
2. Connect a bleeding device to the brake fluid reservoir.
3. Switch on the bleeding device. Bleeding pressure approximately 2.0 bar. NOTE: Drain brake fluid on every brake caliper on both bleeder valves.
4. Continue brake fluid change at the brake calipers (no special sequence).
5. Open every bleeder valve until clear, bubble-free brake fluid emerges and until the corresponding change quantity per brake caliper is reached (approximately 250 cm3).
6. Use a transparent hose and a collecting bottle to check the escaping brake fluid accurately for cleanliness, lack of air bubbles and to determine the brake fluid used.
7. Some brake fluid is also drained off at the bleeder valve of the clutch slave cylinder (approx. 50 cm3).
8. Switch off and disconnect the bleeding device. Correct the brake fluid level if necessary.