![]() |
|
|
|
|
#1
|
|||
|
|||
Quote:
__________________
![]() 1998 E300D, 287k, barely broken in. |
#2
|
||||
|
||||
Quote:
Because of all of this I decided to pull off my Vacuum Pump and take a look. After removal a visual inspection I could not see any thing that looked like it was badly worn or ready to fall apart and I put it back on. (I was inspection the arm, linkage and roller that drives the vacuum pump piston; this is the part that is inside the engine.) If something goes wrong on the other end of the pump the part with the valves in it the pump will just stop producing vacuum and you will loose your power brakes and will not be able to shutoff the engine (you will have to open the hood and push the manual shutoff by the valve cover). The pump is not hard to get off; I did have to loosen the Power Steering Pump and remove the belt from the Power Steering Pulley in order to get the V Pump off. I will PM you some additional information.
__________________
84 300D, 82 Volvo 244Gl Diesel |
#3
|
||||
|
||||
Quote:
![]()
__________________
![]() 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#4
|
||||
|
||||
I don't really know what caused my failure but I suppose the bearings failed and the pump continued to work with the parts simply rubbing on each other until one wore in half.
Then that part fell into the cam chain and broke the cam chain and the pistons collided with the stationary open valves pushing them up breaking the cam and cam towers. Then fixing just the broken stuff was going to be a couple of grand and doing the whole motor was only another three or so so I did that too. If it happened today with what I know about the bottom end of a benz motor I would not do the bottom end, just a valve job and repair the damage and lite it off! Tom W
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. ![]() ..I also have a 427 Cobra replica with an aluminum chassis. |
#5
|
|||
|
|||
Quote:
|
#6
|
||||
|
||||
Quote:
![]() ![]() ![]()
__________________
![]() 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#7
|
||||
|
||||
Quote:
__________________
84 300D, 82 Volvo 244Gl Diesel |
#8
|
||||
|
||||
Oh yah, in Haynes, they also show that "bushing" that wares out in back of the timing device.
__________________
![]() 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#9
|
||||
|
||||
Quote:
__________________
84 300D, 82 Volvo 244Gl Diesel |
#10
|
||||
|
||||
Quote:
__________________
84 300D, 82 Volvo 244Gl Diesel |
#11
|
|||
|
|||
As I recall it was about 380 - 390K. I do remember it was before I turned over 400K. It sounded just like a bad vacuum pump, but the sound didn't go away when the pump was replaced. The sprocket behind the IP/vacuum pump was banging around too much, it's only supposed to have about 1 mm of axially movement.
|
#12
|
||||
|
||||
So it was just worn out, at almost 400k miles it had a lot of time on it.
__________________
2016 Corvette Stingray 2LT 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#13
|
||||
|
||||
Quote:
I can also see a possible situation developing here. At around 300,000 the timing chain is stretched. The person changes the chain not thinking to check the Fuel Injection Pump Timer Bushing clearance. Some time down the road the Timer Bushing becomes worn and the Timer takes out Vacuum Pump and pieces of Vacuum Pump take out the new timing chain and possibly damaging other parts of the engine.
__________________
84 300D, 82 Volvo 244Gl Diesel |
#14
|
|||
|
|||
Quote:
Do I want a used one or rebuild my 294K pump? I don't really need a pump that will last another 30+ years, do I? What if I rebuild it & I mess it up? What are your experiences? Thanks, Dave |
#15
|
||||
|
||||
Answer
Quote:
As you will see from the following threads, it is not a difficult job. Vacuum Pump Rebuild Thread .
__________________
ASE Master Mechanic https://whunter.carrd.co/ Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 2003 Volvo V70 https://www.boldegoist.com/ |
![]() |
Bookmarks |
|
|