1974 Johnson 135 HP Outboard Motors Service manual, Page 124Get this manual
9-12 kInsert complete piston rod assembly into cylinder using circular motion to work piston "0" ring past cylinder threads1Tighten end cap securely with spanner wrenchmLubricate pivot pin with OMC Sea-Lube Anti-Corrosion Lube, and install cylinder assembly to mounting bracketsnReinstall Trim and Tilt unit to outboard,
TRIM CYLINDER
(Port) See Figure 9-11
Before disassembly, check sender unit resistanceConnect an ohm meter between sender unit terminal screw and oil line elbow With piston rod fully retracted, meter should indicate 90 ohmsSee Figure 9-13Extend piston rod to end of travelMeter hould read :!: ohms