self destructed

**vk2mad** · 28-07-2016, 01:57 PM

Set off with friends for a trip through western Qld. Had my T4 diesel serviced including the replacement timing gear. Having travelled 6000k and almost reaching Mooloolaba on the way home, the motor just ceased to function. Not seized, just no compression on any cylinder. I just hope that it is covered by the service centres waranty. Probable timing belt slipped and taken out the valves, possible rockers, possible pistons. NRMA having it returned to Sydney..and then the fun starts. Jim

**Umai Naa!!** · 28-07-2016, 03:47 PM

Last time I did one, the pistons were fine, but it destroyed the head.

Cracked the combustion chambers where the glow plug threads are, and smashed all the lifter buckets and shims.

**vk2mad** · 28-07-2016, 04:34 PM

Thanks. Hopefully that is all that is wrong with mine

**theresanothersteve** · 29-07-2016, 08:19 AM

Had the same thing happen on a Land Rover Discovery 1.

When they replaced the timing belt they didn't tighten a retainer on the tensioning device. It slipped...

**jets** · 29-07-2016, 09:12 AM

I will be following this thread with interest. While I have never had any form of pileup,I follow the threads on the T4 Forum. I have changed the belts on the two T4s I have owned & still own. This maintenance procedure requires careful work after considerable research.
Unfortunately there are too many mechanics that don't have the necessary experience/knowledge & special tools.

**vk2mad** · 29-07-2016, 09:39 AM

I understand that the water pump should be replaced at the same time. This was not done. I think it might be time for a new service centre.

**Umai Naa!!** · 29-07-2016, 10:46 AM

Yeah, it's just another thing to go wrong and cause the belt to fail if not changed.

Last one of these I did, the previous mechanic left the old pump on it, the bearing it failed, skewed the gear, causing the belt to wear away on the belt cover. I managed to catch it when the belt was ¾ of an inch wide still.