Timing Belt

RAWhide1 · 12th August 2019, 09:32

What method to use in removing crank pulley bolt, this is on a 75 automatic gearbox tried using the brake pedal but only works on manual as expected need this to be done as trying to replace cylinder head gaskets, in a panic as was going away in 10 days.

trikey · 12th August 2019, 12:29

Impact gun is the best bet.

marinabrian · 12th August 2019, 16:23

22mm socket with sliding bar fitted to the crank bolt, and locked against the ground, make sure the coil packs are disconnected and crank the engine

This will crack off the lower pulley bolt.

Brian

SD1too · 12th August 2019, 19:21

And how is it tightened to the specified torque after the repair has been completed?

Simon

marinabrian · 12th August 2019, 21:03

Quote:

Originally Posted by SD1too

And how is it tightened to the specified torque after the repair has been completed?

Simon

In the absence of the special holding tool 12-170, by removing the starter motor and spragging the flywheel ring gear using a stout flat bladed screwdriver

Of course I have the special tool, but for people who do not possess the equipment to do it as per the instruction in RAVE, there are alternatives workarounds which are completely satisfactory.

I hope this answers your question Simon, and also assists the OP in carrying out the task in hand.

Brian

SD1too · 12th August 2019, 21:39

RAVE isn't clear whether or not 12-170 is compatible with both manual and automatic transmissions. Is it?

Simon

marinabrian · 12th August 2019, 21:45

Quote:

Originally Posted by SD1too

RAVE isn't clear whether or not 12-170 is compatible with both manual and automatic transmissions. Is it?

Simon

Yes it is Simon, and a stout screwdriver is also suitable to prevent the flywheel from turning.

The only disadvantage to the screwdriver method, is the requirement for an assistant, to hold it in place while the bolt is tightened.

This will only really apply when reassembling, as the starter motor workaround I described earlier, always works when it comes to removing the 1800 crank pulley

Brian

SD1too · 12th August 2019, 21:52

Quote:

Originally Posted by marinabrian

The only disadvantage to the screwdriver method, is the requirement for an assistant, to hold it in place while the bolt is tightened.

You can say that again, when the bolt requires 205 Nm. Fortunately it appears that 12-170 can be purchased for less than a tank of fuel.

Laser Tools 4522

Simon

marinabrian · 12th August 2019, 21:59

Or better still

LINK

Eddy600 · 13th August 2019, 09:56

I have had trouble before getting enough leverage and space to manoeuvre from underneath while on axle stands, is there an easier method to tightening this bolt, from above perhaps, or would tightening to ft suffice.

12th August 2019, 09:32	#1
RAWhide1 Newbie Rover 75 Tourer Join Date: Jun 2016 Location: Barrow-in-Furness Posts: 19 Thanks: 0 Thanked 0 Times in 0 Posts	Timing Belt What method to use in removing crank pulley bolt, this is on a 75 automatic gearbox tried using the brake pedal but only works on manual as expected need this to be done as trying to replace cylinder head gaskets, in a panic as was going away in 10 days.

12th August 2019, 12:29	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,764 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Impact gun is the best bet. __________________ Lest we forget..

12th August 2019, 19:21	#4
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,344 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	And how is it tightened to the specified torque after the repair has been completed? Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

12th August 2019, 21:39	#6
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,344 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	RAVE isn't clear whether or not 12-170 is compatible with both manual and automatic transmissions. Is it? Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

12th August 2019, 16:23	#3
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	22mm socket with sliding bar fitted to the crank bolt, and locked against the ground, make sure the coil packs are disconnected and crank the engine This will crack off the lower pulley bolt. Brian

12th August 2019, 21:59	#9
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	Or better still LINK

13th August 2019, 09:56	#10
Eddy600 Loves to post Rover, MG Join Date: Jul 2016 Location: Halifax Posts: 275 Thanks: 19 Thanked 77 Times in 61 Posts	I have had trouble before getting enough leverage and space to manoeuvre from underneath while on axle stands, is there an easier method to tightening this bolt, from above perhaps, or would tightening to ft suffice.