I have just done it, have a look at my build thread (link in signature) I wrote the major points up. I used a 6mm drill to lock the scissor gear, then when putting the pump gear back on manipulated the teeth alignment to slide the pump gear back on.I have been told that I need to lock the timing gear before I take the injector pump off
Can someone give some advice please
It’s a 3 litre Nissan patrol y61
Funny, I actually found that bolt to be unnecessary, I could manage the tension on the scissor gear quite easily with the 6mm drill through the aperture without risk to any parts, all went back together fine, no worries and started first kick.Once you have the front engine cover off. Rotate the crankshaft until engine is at TDC as well as C & CC lining up on the injector pump drive gear and idler gear.
Remove the bung at the front of the engine and screw in a 6mm x 20mm bolt to retain it exactly where it should be. Do not use a drill bit as not only do you risk damaging the gears and having alignment issues. You will need that 6mm drillbit to align up the pump gear when you put the new IP in.
I like shiny stuff
Yes lolol, I mentioned something like this in my build thread, turned the damn thing what felt like 200 bloody times . The worst part was I turned it that much I must have missed it once due to oil on the gear..........One thing not mentioned, to lock the idler gear, the gear set is semi hunting, in other words, it doesnt line up when at tdc every time. It can take 10-40 turns of the crank for the ccc and hole to be in the correct position.
It's certainly a job where a ratcheting breaker bar earns it's money.Yes lolol, I mentioned something like this in my build thread, turned the damn thing what felt like 200 bloody times . The worst part was I turned it that much I must have missed it once due to oil on the gear..........
In my signature it is called My Ongoing GU Mods, index as to where to find certain topics is on the first page, I just tried it and it works, changed name from My Build a couple of months ago.Where is your link for the build thread GU2? I TRIED every link in your sig and can't find it..
Thanks Dan. If you go to the first post there is an index stating a post number where mods start or continue at.Seen the thread before but i'm having trouble finding the IP part,i want to see how you got on out of interest.
My hat is off to you with your Patrol though it sure is a work of art and one of the best i have seen in terms of modds done and attention to detail unkrock:
Good one mate. Sounded painful but you got it done. It definitely sounds like you didn't have the idler gear locked up fully prior to removing the IP gear. With mine all I needed to do was put a 6mm drillbit in the alignment hole on the IP and the gear slid straight on without having to leaver, bump or swear at it.It's a bit of a long story but it may ring some bells if someone else is having these issues. It all started about 13 weeks ago: March the 9th 2019. i filled up at a fuel station i'd never used before on my way to the english lakes 60 miles in and im just coming off the m6 motorway and on to the A/B roads when engine light comes on and a sound like the big ends have gone! i slapped myself and said calm down it must be diesel knock and you just have a fueling issue, so i re-started the patrol and it was fine and i carried on. It did this once or twice more before i got to my destination ( fell race at black combe in cumbria). For the next 13 weeks i proceeded to change the fuel filter (twice), change the fuel line, cleaned the maff and the boost sensor and air filter, tested the alternator. finally found someone with a code reader and got the 'P7 fuel timing error' fault code. the next few weeks the Patrol would work fine then it wouldn't, i took it to quite a few garages , some said pump some said injectors, some said fuel filter, some said air in the system. Then i went to a diesel specialists and they said 'fuel timing solenoid' 130 quid, sorted! so i tried to get the rascall out. Hell it was stuck faster than an Alabama tick. I spent 4 days drilling, tapping and prying ( and praying) but no! It was not going to budge. so it was time for open heart surgery and remove the beast. once the pump was off and i could get some tools on the flange of the solenoid i realised it was seized in properly and the flange was starting to peel off the solenoid! Time to take it to the diesel shop, the guy said 70 pound an hour how long do you want us to spend on it? Plus i would want a full IP service before putting it back on my Patrol. so when i asked about a new ( recon pump) 770.95 quid plus VAT didn't sound too bad, plus i got a refund on the new solenoid that i'd bought previously. so i purchased a new ( factory recon) pump from "Merlin Diesels uk). I've just put it on and its all pretty straight forward, bar the Darn scissor gear ( satan himself must have invented that device). From reading the manual it sounds like cam alignment isn't an issue regarding pump removal, rather tdc with the scissor and IP drive gear alignment. But i kept turning it over till number 1 cylinder was at TDC ( make sure you take out the heater plugs it took me 5 minutes of sweating with my breaker bar before working that out lol so i thought i'd just mention that . a medium hand ratchet will turn it over now ) and the IP drive gear marks lined up with the scissor gear mark. Then stuck a bolt in the lock up apperture and locked it all up, also got the tipex and centre punch out and marked everything in sight ( even the dogs position on the drive lol. ) Then i released and took the cam chain tensioner and shoes off and looped the chain up and out of the way back over itself on the cam shaft drive gear. Remove the IP drive sprocket, then remove the IP drive gear and as soon as it comes off the shaft,the darn scissor gear outer spins half a tooth! i don't know if that always happens or just me not tightening the lock bolt up enough? Anyway, at this point 3 bolts later and the pump is yours! ( as long as you've un-bolted everything attached to it). You'll have so much fun putting the IP drive gear back on ( you'll ideally have some one to wiggle a big screwdriver at the scissor gear whilst pushing and jiggling and checking everything is lined up lol. I was on my own with a torch a mirror a screwdriver precariously wedged against the S gear and i was wiggling and jiggling till my forearms started to cramp but then it just slid in! i checked all the marks and everything lined up PHEW! I left it at this point before i had a nervous break down. next day I put it all back together . I got one of those squeezy hand bleeder pumps and bled everything ( not the dog) fastened everything up bar the final injector pipes which i spun the engine over first to bleed the lines. then tightened those up and what a relief when the old girl fired up ( gave it about a minute of hand pumping on the lift pump) and shes been fantastic for two weeks now!Yeah. better on fuel too. If only i could have got that darn solenoid out!
Black 04 patrol auto 73000 miles 275/ 70 /16
Have a look in my build thread (index in first post), I wrote up doing mine last year, It doesn't always line up immediately you may need to turn it over many more times to get it to line up correctly, bloody pain in the bum.Bit of a late addition here, but if anyone could help that'd be much appreciated. As you can see I'm trying to lock the scissor gear however the hole doesn't seem to line up. It's at TDC and the timing marks are definitely all matched up C, CC.
Not the best photo.
Any advice? Cheers