Blue Opal/Engine
Notes for the engine, a Yanmar 3GM30F.
Tools
| Area | Item | Fixing | Driver |
|---|---|---|---|
| Engine | Alternator | Top bolt | 14mm |
| Bottom bolt | 12mm | ||
| Swing nut | 12mm | ||
| Water Pump | Top bolt | 12mm | |
| Bottom bolt | 12mm |
Starter Solenoid
To solve a starting issue, an automotive relay was installed. The correct relay will have four terminals numbered 85, 86, 30 and 87.
Make up a length of cable from the large screw on the solenoid (battery cable terminal) and connect this to #30. Remove white cable from small solenoid terminal and connect to #85.
Make up cable from #86 connect to engine block. Connect #87 to small terminal on the solenoid.
Terminals #85 & #86 actuate the relay and #30 & #87 power the solenoid.
-- https://www.cricalix.net/2023/05/13/relaying-a-solenoid/
Parts Cross-reference
| Item | Page | Original | Alternative 1 | Notes |
|---|---|---|---|---|
| Primary fuel filter | Racor R12P | Fleetguard FS19627 | Blue Opal's original filter housing was replaced with a Racor | |
| Secondary fuel filter / fuel strainer | 55 | Yanmar 104500-55710 | Orbitrade 8-55710 | |
| Oil filter | 38 | Yanmar 124450-35100
Yanmar 119660-35150 Yanmar 119305-35170 Yanmar 119305-35151 |
Blue Print ADS72101 | The ADS72101 has a larger outer diameter, but fits. Filter is shared across 1/2/3GMs.
35100 appears to be unavailable. 35151 supersedes 35150, slightly smaller. 35170 found in spares on board. https://marineparts.ie/filter-assy-lub-oil/ (35170) https://marineparts.ie/oil-filter-rec119305-35151-yanmar/ (35151) |
Page numbers reference the Yanmar Parts Catalog.
For fuel filters, https://www.fuelfilter-crossreference.com/convert/FLEETGUARD/FS19627 is a decent reference.
For oil filters, https://www.oilfilter-crossreference.com/convert/YANMAR/124450-35100 is a decent reference.
Filter type: Full-Flow Lube Spin-on Thread measurement: 20x1.5mm Outer diameter: 77 mm (Approx. 3.03") Height: 86 mm (Approx. 3.39")
Inventory
| Purpose | Part number | Count | Notes |
|---|---|---|---|
| Impeller kit | Johnson 09-810B / JIKJMP005 | 3 | Yanmar water pump is a rebadge |
| Impeller | Yanmar 128296-42070 | 1 | Not a full kit |
| Primary fuel filter | Fleetguard FS19627 | 3 | |
| Oil filter | Yanmar 119305-35170 | 1 | |
| Oil filter | BluePrint ADS72101 | 4 | |
| Thermostat gasket | Yanmar 129350-49451 | 1 | https://marineparts.ie/rec129350-49541/ |
| Fresh water thermostat | Yanmar 121750-49800 | 1 | |
| Fuel filter | Orbitrade 8-55710 / 10450055710 | 3 | |
| Alternator belt | Yanmar 25132-003700 | 1 | https://www.svb24.com/en/v-belt-for-yanmar-2gm20f-3gm30f.html |
| Raw water belt | Yanmar 104511-78780 | 0 | https://www.svb24.com/en/yanmar-v-belt-for-seawater-pump-2-3-gm.html |
