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This 2010 XK suffered from the dreaded wet passenger floor (her feet!) and noisy fan motor.
Solutions to the duck-bill or clogged condensate drain are well documented elsewhere.
There are different versions of the fan motor used. This is a genuine Jaguar replacement that continued to be exposed to wayward condensate. The PO chose to repair the fan motor by replacement but ignored the condensate issue.
This discussion addresses the damage to the fan motor and possible rebuild/repair. It should be useful in your decision about what to do with your water-logged fan motor.
This fan uses high speed sealed bearings, NSK 608DW. Yep, skateboard wheel bearings!
Pictures are worth 1000 words, so here goes: Bearings, though sealed, are not immune to water. Disassembled and cleaned, the motor awaits reassembly. the rust was removed from the motor housing using a rotary wire brush. Bearings are a force fit. Care must be taken to properly locate the bearings. Pull and drive the inner race only to avoid damage to the bearings. Take care to avoid metallic contamination of the permeant magnet. Belville (wavy spring) washer, not shown, goes into the bearing cup to adjust shaft end-play. Plastic motor end-bell shows brushes with springs removed to facilitate installation of commutator. Insert the brush springs and bend brass keepers closed. Install the squirrel cage next. plastic motor housing last to reduce the possibility of pressing the shaft within the bearings, causing excessive endplay.
As previously stated, your motor may be different. But damage due to water will be similar.
So, source a replacement or rebuild. But lubricating a noisy sealed bearing motor is not going to be productive.
The rebuilt motor performed well at all speeds but exhibited brush noise and a faint whistle.
The brush noise diminished quickly as the brushes re-seated. No brush noise after 15 minutes of medium/high speed operation.
The whistle was remedied by a small tape cover at the bottom shaft-end opening. The opening originally had a paper tape cover, apparently for that purpose.
So, after a brief (15 minute) break-in and recovering an unintended air inlet, the rebuilt motor functions as new.
Materials used: 2 ea NSK 608DD bearings $15.98 delivered
Misc. shop materials (WD-40, rotary wire brush)
Time required for rebuild: 3 hours
Analysis: The VDO replacement is approximately $75 delivered.
I enjoy the challenge. Draw your own conclusion.
Duck-bill, wet floor fan motor aftermath
