Mud-club

Vehicle & Technical => Discovery => Topic started by: RichardM on October 13, 2007, 20:59:08

Title: Three Part Rocker Shaft
Post by: RichardM on October 13, 2007, 20:59:08: I took my cylinder head off today and discovered my rocker shaft is in three peices. It has snapped in the middle and at the front pedestal. Has any one seen this before? What would have caused it? And how come the engine ran fine like that? Will I be ok just buying a new shaft and swapping all the components over?
Title: Three Part Rocker Shaft
Post by: extreme90 on October 13, 2007, 22:39:51: dont no the cause, and ive never heard of any storys of it before :?

but aslong as all the rockers are fine with no cracks or hairline cracks, and the oilways are nice and clear

tappets are all ok with no abnormal ware or uneven ware

springs are all ok

just fit a new shaft and it should be ok

dan
Title: Three Part Rocker Shaft
Post by: Les Henson on October 14, 2007, 07:06:36: I've heard of one breaking in two - but again the reason for it was not known. I would check the rockers and pads for excessive wear as the oil pressure/feed would be lower the further along the shaft.

Les.
Title: Three Part Rocker Shaft
Post by: Range Rover Blues on October 16, 2007, 01:01:50: Busted timing belt?
Title: Three Part Rocker Shaft
Post by: RichardM on October 16, 2007, 22:46:42: Quote from: "Range Rover Blues"
Busted timing belt?

If that was the case I'd have some bent push rods and an engine that didn't run...Mine was running fine till I took it apart and found the broken rocker shaft. In case you're wondering I took it apart to extract the snapped off end of a glow plug that was stuck solid.
Title: Three Part Rocker Shaft
Post by: extreme90 on October 16, 2007, 23:18:16: Quote from: "RichardM"
Quote from: "Range Rover Blues"
Busted timing belt?

If that was the case I'd have some bent push rods and an engine that didn't run...Mine was running fine till I took it apart and found the broken rocker shaft. In case you're wondering I took it apart to extract the snapped off end of a glow plug that was stuck solid.

a bust cambelt in the past could have caused it
cracked the shaft
then its broken over time
dan
Title: Three Part Rocker Shaft
Post by: RichardM on October 17, 2007, 00:14:33: good point Dan, I hadn't thought of it like that
Title: Three Part Rocker Shaft
Post by: Range Rover Blues on October 17, 2007, 01:23:14: Anyway, how did you get the glow plug out? I'm asking becasue I have to do one now :roll:
Title: Three Part Rocker Shaft
Post by: extreme90 on October 17, 2007, 23:10:30: Quote from: "Range Rover Blues"
Anyway, how did you get the glow plug out? I'm asking becasue I have to do one now :roll:

i get them out by getting the engine stonking hot
if that fails then off with the head
silicone a pop bottle to the stubborn plugs cylinder
then tip a bit o derv in and leave overnight

then if all else fails
air gun it which dont like doing

dan
Title: Three Part Rocker Shaft
Post by: Range Rover Blues on October 18, 2007, 00:39:26: I think it's past most of that, though I've found WD40 dissolves combustion deposits harmlessly and I was thinking of sticking the head in the oven for an hour, but RRRs new motor had one snapped off in the head and as the gasket has just gone the glowplug would have to come out to get the head skimmed.

Anyway, what with time constraints, unknown history, the glow plug and not actually knowing what caused the gasket to go I had a mad moment and bought a new head.

Oh and a new glowplug :lol:
Title: Three Part Rocker Shaft
Post by: L90OOK on October 18, 2007, 10:03:35: A mate of mine had his rocker shaft snap on his 200tdi. Don't know the cause, he fitted a new one & it worked fine from then on :?
Title: Three Part Rocker Shaft
Post by: RichardM on October 18, 2007, 22:01:15: Once the head was off I got the remains of the glow plug out easily. I just used a punch and hammer on the end. It didn't take much effort to shift it.
Title: Three Part Rocker Shaft
Post by: cardiff_gareth on October 18, 2007, 22:43:02: Rich,
Hows she looking now, did you call vince, he's got a lock up in Wenvoe and I pass it most days on the way to work. I'm not in work 2moro but back in half day Saturday so if he's got one then i can pick one up for you on the ay back home ??
Title: Three Part Rocker Shaft
Post by: RichardM on October 18, 2007, 22:45:59: I ordered everything from Paddocks on Saturday evening Gareth...still waiting for it to arrive. But I'll keep hold of Vince's number, I'm sure I will need something before long!
Title: Three Part Rocker Shaft
Post by: cardiff_gareth on October 18, 2007, 22:50:50: Quote from: "RichardM"
I ordered everything from Paddocks on Saturday evening Gareth...still waiting for it to arrive. But I'll keep hold of Vince's number, I'm sure I will need something before long!

ok!
hope she's in one peice soon :wink:
Title: Three Part Rocker Shaft
Post by: Range Rover Blues on October 19, 2007, 01:09:43: I'm told Paddocks have shifted a lot of 300TDi heads recently :?