The coolant hoses behind the false firewall of my '91 560SEL are showing their age, so swapping-in fresh rubber for these now 32-year old original parts would seem to be a prudent plan. Is it possible to do this job completely from the engine side? (i.e., WITHOUT requiring a rear approach via removal of the dash...)

Specifically, I'm wondering about accessing the clamps for the two hoses that run from the heater core to the monovalve assembly and which pass through the main firewall and into the section behind the false firewall--part #126-832-02-94 (Left) and 126-832-03-94 (Right).

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Eric

1991 560SEL-Euro (214,000 miles)
1989 420SEL (Retired from daily use at 325,000 miles; Use as donor vehicle)

No such luck.

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1979 Black on Black, 300CD (sold), 1990 Black 300SE, Silver 1989 Volvo 780, 1988 300CE (vanished by the hands of a girlfriend), 1992 300CE (Rescue).

Oof… That’s what I was afraid of!

Before simply throwing in the towel on this maintenance task, does anyone know whether removing the W126’s windshield wiper motor assembly might possibly provide access to the heater core hose clamps beneath?

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Eric

1991 560SEL-Euro (214,000 miles)
1989 420SEL (Retired from daily use at 325,000 miles; Use as donor vehicle)