Going over the water pump replacement in the Haynes manual for my 83' 300D. I'm confused as the manual says to unbolt the water pump housing bolts. Do you need to remove the pump and housing together, or can the pump be unbolted from the housing for removal?

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1983 300D 280,000
1983 300TD 125,000 Killed by oak tree.
1983 240D Sold
1986 Ford F250 Diesel 6.9l 169,000

An "impeller" is whats called the "water pump". The impeller is unbolted from the water pump housing and replaced. The "housing" stays bolted to the engine.

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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"

Thanks,

As far as I can tell the Haynes has you unbolting the entire housing from the block. Mistake on their part?

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1983 300D 280,000
1983 300TD 125,000 Killed by oak tree.
1983 240D Sold
1986 Ford F250 Diesel 6.9l 169,000

Huh, I've changed out a few on my 240Ds, dont believe the 617 is any different as far as changing the water pump (impeller), dont know why you would need too remove the housing. Be careful not to break any of the bolts, or you will be taking the housing off:

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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"

Yes, be careful, I snapped off a bolt during re-installation, use anti seize compound. Anyway, here are pics of what's on the car and a new water pump.

Attached Thumbnails

   

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83 SD

84 CD

Although you can and should be able to remove the impeller only, in every case that I have done this (4x) the impeller has galvanically stuck itself to the alloy housing and I have had to remove both together and separate with a thin knife. My advice is to apply some non-hardening sealer to the joint and use anti-seize on all the bolts.

Rick

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)