Hi everyone,
If this should be in a separate post please let me know, figured it was good to keep similar info together in one thread but happy to move.
Just had the brake booster motor die on the driveway at 190k miles a week before it's MOT.
The least worst place to fail in fairness!
No real warning, pump-on cycle time was well under 30s, only evidence of potential problem was the external corrosion on the casing and the age/mileage (2002/+190k miles).
It's been on the list for refurbishment after a lot of other work... arm twisted now...
Please check yours!
Techstream codes:
C1252 - hydro-booster pump motor
C1256 - accumulator low pressure
On inspection:
Bad bits
- commutator rings worn
- brushes worn
- quite a lot of carbon and rust inside the casing (a good teaspoon full)
- armature enamel appears to have been abraded off
- internal case corrosion
- heavy external case corrosion
- multi-layered gasket heavily corroded, delaminating
- aluminium motor, pump faces corroded
- vent port mostly blocked with powedery corrosion on pump face
Good bits
- braided copper cables to brushes ok
- external electrical cables and screws not corroded at all
It's off to Robson and Francis rewinds tomorrow.
I'm trying to find out (from those who've been through this) what did you do when reassembling as there is a gasket (se below) between the motor and the pump face which is in poor condition.
FIPG? Generic gasket material cut to size? New part available from somewhere?
It doesn't appear to be a part which is available separately from the motor/pump assembly (as below)
Any help greatly appreciated.
Also, is it adviseable at this mileage to change out the piston + seals regardless as per uHu's post #37?
Kind Regards,
Graham