Rebuilding Power steering hose for 112 (also 111 113 108/109)

850 Views 4 Replies 3 Participants Last post by TZ_280SEL, Jun 24, 2020

baltobenz

Discussion Starter · Jun 18, 2020

Has anyone ever replaced or rebuilt the high pressure power steering line that connects the steering box to the throttle positioner on their 60’s Benz. (this increases rpm above idle when the steering wheel is turned)
Since this line is rebuildable, I’ve been looking for the 5mm ID x 15mm OD hose to use with my original fittings. This is for my 300se coupe, but a similar line is used in the 108/109, and I’m sure 111 and 113. Classic Center said my 112 part number is NLA.

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TZ_280SEL

· #3 · Jun 21, 2020

My W108 doesn't have that line, but I rebuilt the hose for my pump to box high pressure hose. The fittings look similar so I assume the procedure is the same. Here is the write up from when I did mine years ago. No issues and I drive here daily.

Fixing leaking PS hose

I recently pulled my engine and thought I would document some of the repairs I have completed that I couldn't find in the forum. My power steering hose was leaking and as usual, the local BENZ dealer only had blank stares for me. I did a little research and determined the hoses on my care...

www.benzworld.org

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TZ_280SEL

· #5 · Jun 24, 2020

I would be tempted to try this hose (NL245: SAE100R5 DOT Black Hydraulic Hose). It is 3/16" ID and a bit over 1/2" OD. It is 3000# working pressure (12,000# burst) and meant for field attachable fittings. Just a thought.

New-Line Hose & Fittings

www.new-line.com

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Fixing leaking PS hose

New-Line Hose & Fittings

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