Shire 30 Workboat Inboard Diesel Engine PRM90 Package

Description

Commercial canal maintenance crews fight narrow bridge holes and tight shallows where raw water cooling circuits choke. The Shire 30 Workboat Inboard Diesel Engine solves lock transit challenges with closed skin-tank cooling. Its 3-Cylinder 1.3L design produces 27 BHP continuous thrust. The mechanical gearbox package requires proper cable adjustment to prevent cone clutch slippage under tow.

Gray iron monobloc casting houses three parent cylinder bores matched to an overhead valve cast iron head. An isolated 12V electrical arrangement carries a 1.4 kW starter along with dual alternators, providing 50A engine starting power and 110A auxiliary charge. Total unrigged dry weight equals 320 lbs without gear. The engine base envelope spans 27.0in long by 19.3in wide and 23.2in high, while the crankcase accepts 1.16 US gal of engine oil.

Key Features of Shire 30 Workboat

Commercial navigation authorities buy Shire 30 Workboat inboard diesel engine assemblies to keep service craft moving without overheating hazards. The package mates a PRM 90 mechanical transmission to the bellhousing with heavy flexible mounts.

• PRM 90 mechanical gearbox engages forward and reverse gears through positive cone clutches
• Mechanical in-line injection pump distributes fuel through steel lines without electronic sensors
• Dual 12V alternators furnish 50A engine charging and 110A service bank regeneration
• Skin-tank cooling connection channels 1.45 US gal of coolant away from weed-filled canal waters
• Monobloc cylinder design retains bore alignment under continuous work punt towing strains
• Torsional damper drive plate suppresses rotational shock between flywheel and gearbox input shaft
• Heavy-duty flexible engine mounts absorb engine vibration along the hull stringers

Dynamometer Ratings Marine Transmission Performance

Dynamometer pulls document 27 BHP continuous power at 2,800 RPM and 30 BHP maximum rating at 3,000 RPM. Keel cooling holds coolant flow steady at 180°F while pushing work punts through shallow silt beds. Lube oil pressure reads 44 PSI under continuous mid-range RPM across maximum static installation slopes of 15°. Injector break pressures hit 195 bar for complete fuel atomization, while crankshaft main journals exhibit under 0.0006in TIR runout to protect connecting rod inserts under full mechanical workboat push loads.

Maintenance Protocols Vessel Constraints

Mechanical control levers actuate shift and throttle motions with 4 lbs of input force. Do not specify this package for commercial push-tugs moving loaded steel hopper barges above 20 tons or hulls operating against heavy coastal tidal river surges.

• Drain 1.16 US gal of 15W-40 lube oil every 250 operating hours using the brass sump pump
• Change the PRM 90 gearbox fluid every 500 operating hours to minimize internal gear tooth pitting
• Inspect fuel filter canisters every 500 operating hours to stop abrasive dust reaching pump plungers

Warranty Terms Package Contents

E.P. Barrus backs this equipment with a 2-Year commercial warranty or a 3-Year inland leisure warranty. The crated delivery holds the complete engine block, fitted PRM 90 gearbox, 12V starter, dual alternators, control panel with wiring harness, sump drain pump, and service manual.