#d110

04/07/2024: Flap Differential

Annoyingly one day Amy came home… and I’d noticed the rear near side mud flap was missing, wtf!? This was a long time ago and it was in fact it a new mud flap that appeared to be stolen! Now I’m not one to throw accusations around but it seemed odd to me and they (bolts) were loctited in.

So cut a long boring story short, I had a spare used flap in the box of spares, ordered stainless steel brackets and fasteners. The brackets went for powder coating and eventually (today) I fitted it all.

Top tip: Scour pad and some washing up liquid with warm water is the recipe for getting the weathered mud flap back into something presentable, plus with the addition of a plastic enhancer - not bad aye!?, just a shame it makes the rear cross member look like turd.

Now onto the D110, a leak on a truck is like it shedding a tear of disrepair… I mean if I was leaking fluid I’d likely be pretty upset as well. So, we focus our or my attention to the rear differential input seal, which has had a moist casing for a while.

How to….

1. Mark the propshaft position on the drive flange for correct refitting.

2. Remove the propshaft bolts using a spanner/socket, then secure the propshaft out of the way.

3. Use a socket and breaker bar to remove the pinion nut.

4. Slide off the drive flange – a light tap with a rubber mallet may help.

5. Remove the Old Differential Seal, by carefully prying out the old seal using a seal puller or flathead screwdriver.

6. Clean the seal mating surface to remove any debris or old sealant, inspect and grease bearing if necessary.

7. Install the New OEM Differential Seal, by lightly coating the outer edge of the new seal with gear oil for ease of installation.

8. Carefully press or tap it into place using a rubber mallet or a seal driver, ensuring it sits flush and even.

9. Reinstall the drive flange onto the pinion shaft.

10. Apply thread-locking compound to the pinion nut threads and tighten it securely (refer to manufacturer torque specs).

11. Reattach the propshaft, aligning it with the marks made earlier.

12. Check the seal area for any gaps or damage.

13. Refill the differential with fresh oil if it was drained.

14. Test drive and inspect for leaks.

Final Notes:

- Using a genuine OEM seal ensures longevity and a proper fit.

- If you don’t have the correct torque values, tighten the pinion nut securely but avoid overtightening.

- Regularly inspect for leaks after installation.

Parts for Rear Mudgaurds

RH Mudflap Bracket 90: MUC3986

LH Mudflap Bracket 90: MUC3987

Mudflap Support Plate 90 (both sides): MUC1512

Parts for rear differential input seal

Flange Kit: NSTSTC3124G