Service bulletin for repairing slow or erratic convertible top operation on 1997-1999 Jaguar XK8 models by flushing and replacing hydraulic fluid.
This document is a Technical Service Bulletin (TSB) for 1997-1999 model year Jaguar XK8 Convertibles. It addresses issues where the convertible top operates slowly or the latch functions erratically. The problem is attributed to the evaporation and gelling of the original Univis hydraulic fluid within the system pipes and hoses, particularly in moderate to high ambient temperatures or after periods of inactivity. From VIN 037189 onwards, vehicles were filled with an improved fluid, Pentosin CHF 11S. This bulletin provides a revised repair procedure for flushing the hydraulic system and replacing the fluid with Pentosin (Part No JLM21112) on a customer complaint basis.
| Applicable VIN Range | 001001-037188 |
|---|---|
| Recommended Fluid | Pentosin CHF 11S (Part No JLM21112) |
| Fluid Replacement Quantity | Not specified |
The condition is caused by a tendency of the Univis hydraulic fluid in the system to slowly evaporate and gel within the hydraulic system pipes and hoses.
Only Pentosin fluid, Part No JLM21112, should be used for topping up or refilling the hydraulic system.
This procedure should be performed on a customer complaint basis only, on vehicles within the specific VIN range.