Honda GOLDWING GL1800, Service Manual

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LUBRICATION SYSTEM
4-3
SERVICE INFORMATION
GENERAL
• The oil pump has twin pump rotors; main and scavenging. The main rotors pick up oil from the crankcase and delivers
it under pressure to the bearing and other important parts of the engine. The scavenge rotors draw oil from the clutch
housing in the rear case and sends it to the primary drive and driven gears to lubricate and cool them.
• The crankcase must be separated to service the oil pump (page 11-6).
• For engine oil level check, See page 3-11.
• For engine oil and filter change, See page 3-12.
• For final drive oil check and change, See page 3-15.
• For oil pressure switch inspection, see page 20-27.
SPECIFICATIONS
Unit: mm (in)
TORQUE VALUES
TOOLS
Used engine oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periods. Although this is
unlikely unless you handle used oil on a daily basis, it is still advisable to thoroughly wash your hands with soap and
water as soon as possible after handling used oil.
ITEM STANDARD SERVICE LIMIT
Engine oil
capacity After draining 3.6 liters (3.8 US qt, 3.2 Imp qt) –
After draining/filter change 3.7 liters (3.9 US qt, 3.3 Imp qt) –
After disassembly 4.6 liters (4.9 US qt, 4.0 Imp qt) –
Recommended engine oil Pro Honda GN4 or HP4 (without
molybdenum additives) 4-stroke oil or
equivalent motor oil
API service classification SG or higher
JASO T 903 standard: MA Viscosity: SAE
10W-40
–
Oil pressure (at oil pressure switch) 530 kPa (5.4 kgf/cm
2
, 77 psi) at 5,000 rpm/
80
°
C (176
°
F)
–
Oil pump Tip clearance 0.15 (0.006) 0.20 (0.008)
Body clearance Feed side 0.15–0.21 (0.006–0.008) 0.35 (0.014)
Scavenge side 0.15–0.22 (0.006–0.009) 0.35 (0.014)
Side clearance 0.02–0.09 (0.001–0.004) 0.12 (0.005)
Oil pressure switch 12 N·m (1.2 kgf·m, 9 lbf·ft) Apply sealant to the threads.
Oil strainer bolt 12 N·m (1.2 kgf·m, 9 lbf·ft) Apply locking agent to the threads.
Oil pump assembly bolt 13 N·m (1.3 kgf·m, 9 lbf·ft)
Oil pressure gauge set
07506-3000001
or equivalent commercially avail-
able in U.S.A.
Oil pressure gauge attachment
07510-4220100
or equivalent commercially avail-
able in U.S.A.
Oil filter wrench
07HAA-PJ70101
or 07HAA-PJ70100