Jack Posted April 23, 2008 Share Posted April 23, 2008 Ok guys. Back to this one again. It has just happened again whilst sitting in my drive. It dumped shed loads of oil all over the place. So - I have unscrewed the Hydrvac (the screw at the back of the unit) and it was under pressure but no oil or anything else came out......... Any thoughts guys - I have 8 days to get this sorted or my truck won't be at RtV :cry: Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted April 23, 2008 Share Posted April 23, 2008 Ok guys. Back to this one again. It has just happened again whilst sitting in my drive. It dumped shed loads of oil all over the place. So - I have unscrewed the Hydrvac (the screw at the back of the unit) and it was under pressure but no oil or anything else came out......... Any thoughts guys - I have 8 days to get this sorted or my truck won't be at RtV :cry: Jack, Can you be more explicite re. the remark "it dumped shed loads of oil all over the place" :??? Was it engine oil? Where did the "oil" issue from? What were you doing with the truck at the time it happened? Richard Quote Link to comment Share on other sites More sharing options...
Jack Posted April 23, 2008 Author Share Posted April 23, 2008 Hi Richard. I was just moving it around the drive and it was brake fluid and it blew it from every hole in the exhaust pipe :argh: If the Hydrovac has gone then I need to be quick to get one from Rex so that I can work on this over the weekend. Do you think it is gone? Quote Link to comment Share on other sites More sharing options...
Marmite!! Posted April 23, 2008 Share Posted April 23, 2008 Hi Richard. I was just moving it around the drive and it was brake fluid and it blew it from every hole in the exhaust pipe :argh: If the Hydrovac has gone then I need to be quick to get one from Rex so that I can work on this over the weekend. Do you think it is gone? That's the only place brake fluid can get into the exhaust.. Quote Link to comment Share on other sites More sharing options...
R Cubed Posted April 23, 2008 Share Posted April 23, 2008 Ok guys. Back to this one again. It has just happened again whilst sitting in my drive. It dumped shed loads of oil all over the place. So - I have unscrewed the Hydrvac (the screw at the back of the unit) and it was under pressure but no oil or anything else came out......... Any thoughts guys - I have 8 days to get this sorted or my truck won't be at RtV :cry: That plug at the back might not access the section holding the brake fluid ! there are two other sections which some have access to the vac tube which runs to the inlet manifold, sounds like you need a replacement hydrovac as you probably wont get it rebuilt in 8 days !!!!!!!! What it sounds like is happening is the brake fluid is getting in to the vacuum areas of the hydrovac and then when the engine is under max vacuum ie idling, or over run, engine braking down hill, it sucks it up the vac pipe in to the inlet manifold and then burns it and out into the exhaust. Quote Link to comment Share on other sites More sharing options...
Jack Posted April 23, 2008 Author Share Posted April 23, 2008 sounds like you need a replacement hydrovac as you probably wont get it rebuilt in 8 days !!!!!!!! Is it that hard Rich - I have a chum he know stuff like this...........:??? Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted April 23, 2008 Share Posted April 23, 2008 Hi Richard. I was just moving it around the drive and it was brake fluid and it blew it from every hole in the exhaust pipe :argh: If the Hydrovac has gone then I need to be quick to get one from Rex so that I can work on this over the weekend. Do you think it is gone? Jack, I know this was my original suggestion ( brake fluid sucked from servo ) when it happened weeks ago, you should remove the vacuum pipe from the manifold and check if it is wet inside and also if fluid level has dropped. If yes to either or both questions, then you have no option but to change the servo, or get it overhauled, but time being tight, changing is best option. It seems a bit odd that the problem comes intermitently. Quote Link to comment Share on other sites More sharing options...
R Cubed Posted April 23, 2008 Share Posted April 23, 2008 Is it that hard Rich - I have a chum he know stuff like this...........:??? The hard bit is getting the correct seals, it is not very hard to get it to bits but as the truck only has single circuit brakes and this is the main thing which enables you to stop, it might be best to get Rex to do it.... Have you tried to stop you truck with no servo assistance or worst still no brakes at all :shake: :shake: :shake: There are several different types of hydrovac :shake: See Rex, but he might be able to do it for you !!!!!! Quote Link to comment Share on other sites More sharing options...
R Cubed Posted April 23, 2008 Share Posted April 23, 2008 Jack, It seems a bit odd that the problem comes intermitently. This is probably because the vac line to the inlet manifold is on the top of the hydrovac so you would need quite alot of fluid inside the chamber before there would be enough to be sucked into the vac line. Quote Link to comment Share on other sites More sharing options...
Bodge Deep Posted April 23, 2008 Share Posted April 23, 2008 oh gawd i'm gonna be walking at RTV Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted April 23, 2008 Share Posted April 23, 2008 so you would need quite alot of fluid inside the chamber before there would be enough to be sucked into the vac line. The Driver should have noticed the sudden loss of fluid in the reservoir when doing First Parade :nono:................and reported the fault to Workshops Quote Link to comment Share on other sites More sharing options...
Jack Posted April 23, 2008 Author Share Posted April 23, 2008 Permission to cry please. Quote Link to comment Share on other sites More sharing options...
Marmite!! Posted April 23, 2008 Share Posted April 23, 2008 Permission to cry please. Pull yoursef together Jack... stick your hand in your pocket & buy new servo tomorrrow :coffee: Quote Link to comment Share on other sites More sharing options...
Joris Posted April 24, 2008 Share Posted April 24, 2008 It seems the spirits that lived in the GMC left you? :confused: Quote Link to comment Share on other sites More sharing options...
Jack Posted April 24, 2008 Author Share Posted April 24, 2008 It seems the spirits that lived in the GMC left you? :confused: It is still there :-D Going to take the Hydrovac to Rex's this weekend and he will fit a new kit for me there and then :-D RtV is looking good! Great stuff! Thanks to all. Quote Link to comment Share on other sites More sharing options...
ArtistsRifles Posted April 24, 2008 Share Posted April 24, 2008 Permission to cry please. Heh - you think YOU'VE got problems for next weekend!!!!!!!!!! Trade you issues any day........ Quote Link to comment Share on other sites More sharing options...
Jack Posted April 27, 2008 Author Share Posted April 27, 2008 Evening all, OK got up at 06:00 yesterday and the hydrovac and myself made our way up to Rex Ward's (now known as God at Beckett Towers). After a coffee and a few stories the hydrovac was stripped down and the seals replaced and yes they were knackered - so hats off to those that said that this was the problem:bow: On return yesterday and after refitting the hydrovac - Mrs Beckett and I bleed the brakes........:argh: Today we had them all sorted after, in my wifes words not mine - we had a grown up come over and give me hand:cool2: thanks kev -you are a star! So now the GMC has an overhauled hydrovac, new brakes shoes and cylinders :-D and it stops in a perfect line!! ........next stop Route to Victory:cool2: Quote Link to comment Share on other sites More sharing options...
Joris Posted April 27, 2008 Share Posted April 27, 2008 Well done! Quote Link to comment Share on other sites More sharing options...
Marmite!! Posted April 27, 2008 Share Posted April 27, 2008 ........next stop Route to Victory:cool2: Put some fuel in this time & you may keep going :whistle: Quote Link to comment Share on other sites More sharing options...
Degsy Posted April 27, 2008 Share Posted April 27, 2008 Coffee and a few stories, thats Rex but he knows his stuff, glad you're up and running, see you at RTV all being well. Quote Link to comment Share on other sites More sharing options...
R Cubed Posted April 27, 2008 Share Posted April 27, 2008 Well done, to you, glad you have the brakes sorted out... ............................GMC Factoid................................. Did you know the fuel tanks on GMC can hold 40 US Galls which is about 34 of our Galls :shake: that's about £170 worth of fuel.:-D Quote Link to comment Share on other sites More sharing options...
Degsy Posted April 27, 2008 Share Posted April 27, 2008 Don't remind me, the return trip to RTV and the convoys equals over 500 miles for me, cheapest petrol round here is just under 110p per litre and will probably be nearer 115p by the time I fuel up for the trip on wednesday. Quote Link to comment Share on other sites More sharing options...
Joris Posted April 28, 2008 Share Posted April 28, 2008 500 miles, man that's a looooong journey! Quote Link to comment Share on other sites More sharing options...
LeeEnfield Posted April 28, 2008 Share Posted April 28, 2008 I'm looking at doing Bovi event,...........in Bedford, works out about 200 miles each way. :shake: Seriously looking at piggy bank at the mo..........:sweat: Without going too far OT, wonder how many events are going to find entries down, due to fuel costs......... Quote Link to comment Share on other sites More sharing options...
Tony B Posted April 28, 2008 Share Posted April 28, 2008 Saw disiel at Croydon on Saturady £1.25 a litre!!!!:-( Quote Link to comment Share on other sites More sharing options...
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