Power Tilt Conversion

[BB63QM]

I have a 1976 Mercury 850 with manual lift assist tilt. I want to switch to hydraulic tilt/trim.

According to the manual, there is a bolt on system (which replaced the port/stbd assist pistons with hydraulic pistons, and adds a pump and reservoir and hoses).
Questions:
1. Does anyone know the part number for that conversion kit (the manual is silent).
2. Is there a self-contained option? (I rather like the other units I've see, the trim pistons and a single lift piston, onboard motor and reservoir all in one unit.)
---there are a slew on the market, from used to new, but the used only say where they came from, seldom where that could go.
3. If buying a used PT unit, what ELSE do I need? (new transom clamp, plate, wire harness.), or do the units come with everything?

Pros/Cons: As I've watched a few videos and read the manual, it seems that the stock unit might be best if it can be located, as this unit uses the stock mounting hardware with just a piston swap...more hoses to deal with, but that might be better than lifting the motor off (again) to replace base-hardware.

 

[jimmbo]

It would be easier to find a used Engine, up to and including1983, with the Trim System, and just transfer over the Parts
If it is on an 80hp, or 85hp 4 cylinder, or the Inline 6, it should fit.

 

[BB63QM]

Thanks. If buying a used system from one of the engines described, do I just need the life hardware and switch/cable, or do I need a special yea some mount and/or tilt mount (neither none of which are sold with most salvaged systems)

 

[Chris1956]

You need this stuff, plus the pump/reservoir. The PTT brackets bolt to the upper shock support. The top of the brackets bolt to the top mount of the PTT cylinders. The lower shock mount bolts to the lower mount of the PTT cylinders.

TRIM CYLINDERS AND HYDRAULIC HOSES - 1977 Outboard 150 [ELPT] 1150627 | Crowley Marine

View parts diagrams and shop online for TRIM CYLINDERS AND HYDRAULIC HOSES parts, 1977 Outboard 150 [ELPT] 1150627. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available.

www.crowleymarine.com

 

[BB63QM]

You need this stuff, plus the pump/reservoir. The PTT brackets bolt to the upper shock support. The top of the brackets bolt to the top mount of the PTT cylinders. The lower shock mount bolts to the lower mount of the PTT cylinders.

TRIM CYLINDERS AND HYDRAULIC HOSES - 1977 Outboard 150 [ELPT] 1150627 | Crowley Marine

View parts diagrams and shop online for TRIM CYLINDERS AND HYDRAULIC HOSES parts, 1977 Outboard 150 [ELPT] 1150627. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available.

www.crowleymarine.com

Thanks. Those units are seem few and far between…and pricey when found.

1. Is there a self-contained option (designed for other model but will work for mine). I’ve seen lots of units where the pump and reservoir are incorporated, but it’s unclear what else I would need to buy. Most of the used ones for sale are just the hydraulics. Would I need a special transom/tilt/mount bracket/assembly?
2. Is the switch more than a just a switch assembly (some listings speak of relays and switches and others just switches…most of the hydraulic units don’t include either, so it’s unclear.

 

[Chris1956]

I do not know what to suggest for your question #1. You would need a midsection with a newer PTT unit that still fits your powerhead. They may exist, who knows.

As for Question #2: You need a single pole, double throw switch of about 5A, plus one or two solenoids. The PTT pump/reservoir will mount the solenoids, and the wiring to the switch is trivial. The common pole of the switch gets +12VDC and the top pole is wired to the down wire (green) of the PTT motor, either thru a solenoid or directly. The bottom pole of the switch is wired to the up solenoid connected to the blue wire of the PTT motor.

 

[flyingscott]

Buy an aftermarket tilt and trim. CMC and Panther both make one and are pricey