Pics: Code3 Heat Exchanger and Johnson CM30 Pump
As for the Johnson pump, I retrofitted the original connector on the new pump and soldered the wires. I used the clamp that came with it and installed the original Bosch clamp on top of that -nice tight fit. Enjoy the pics!


You cant see it in this pic.. but the Johnson bracket is underneath.
Not sure, but I think what c32used might have been referring to is the hose connections with the Johnson pump... not the mounting bracket. The OEM pump inlet and outlet pipes are slightly larger in diameter, and consequently the hoses are as well. Those slip-fit hose clamps that MB used aren't the greatest... so if you find any minor coolant leakage near your Johnson pump, that's probably where it's coming from.
When I did my install (at the advice of LET), I "upgraded" 4 of the hose clamps (two on Johnson, two on HE) to the screw-type clamps, for a much more secure fitment. YMMV... it might not ever be an issue that you have to deal with. IMHO, it's a worthwhile "ounce of prevention" step, while you still have the PITA bumper off...
Last edited by c32AMG-DTM; Jul 8, 2008 at 07:25 AM.
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Not sure, but I think what c32used might have been referring to is the hose connections with the Johnson pump... not the mounting bracket. The OEM pump inlet and outlet pipes are slightly larger in diameter, and consequently the hoses are as well. Those slip-fit hose clamps that MB used aren't the greatest... so if you find any minor coolant leakage near your Johnson pump, that's probably where it's coming from.
When I did my install (at the advice of LET), I "upgraded" 4 of the hose clamps (two on Johnson, two on HE) to the screw-type clamps, for a much more secure fitment. YMMV... it might not ever be an issue that you have to deal with. IMHO, it's a worthwhile "ounce of prevention" step, while you still have the PITA bumper off...


Heres a shot of the inner bracket paired up with outter bracket.







