F300-LU-Lubrication_System-Part1
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DAIHATSU
F300
[HD-Engine]
LUBRICATION SYSTEM
TROUBLE SHOOTING LUBRICATION SYSTEM OUTLINE LUBRICATION ROUTES OIL PRESSURE CHECK
ENGINE OIL CHANGE & OIL FILTER
REPLACEMENT
OIL COOLER LU-13
SST [Special Service Tools]
TIGHTENING TORQUE LU-17 SERVICE SPECIFICATION LU-17
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TROUBLE SHOOTING
Problem ! Possible causes Remedies Page
Oil ieakage Cylinder head. cylinder block, oil
cooisr or oil pump body damaged or cracked 1 Oil seal faulty
Gasket faulty
Repair. if necessary.
Replace Gil Seal. Repiace gasket.
Low oil pressure OH leakage
Relief valve faulty
Oil pump fau\ty
Poor quality engine oil 1
Crankshaft bearing fauhiy
Connecting rod bearing faulty
Oil filter clogged
Check oil level
Replace relief valve.
Repair nil pump. Change engine oii
Replace bearing.
Replace bearing.
Heplace oi1 filten
Low Dil Ievei
Repair, as necessary.
1 High oil pressure Relief valve faulty
Replace relief valve.
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LUBRICATION SYSTEM OUTLINE
The lubrication system employs a fully-forced feed, filtering method. The oil stored in the oil pan is sucked by an oil pump which is directly driven bythe crankshaft. Then, the thus-sucked oil flows through an oil pump strainer and is filtered at an oil filter. After having passed through the passages of the cylinder block, it will be divided into two streams so as to lubricate various sections. One stream ofthe lubrication oil performs lubrication of various sections of the crankshaft and connecting rod- and piston-related parts. The other stream of the lubrication, oil rises to the cylinder head section. Then, it performs lubrication of the camshaft and valve rocker shaft-related parts.
Valve rocker shalls
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LUBRICATION SYSTEM
LUBFIICATION ROUTES
1 _ Crankshaft main iournal sections The oil which has been sent from the main passage provided lnside the cylinder block to each crankshaft main journal under a pressurized state will be supplied tothe crankshaft main journal sectiens through the bearing holes, via the oil grooves of the crankshaft main journal sections at the cylinder block side and the oil grooves of the crankshaft bearing caps. (However, in the case of the No. 5 main journal, no oil groove is provided both at the cylinder block side and at the crankshaft bearing cap side.) The thus-furnished oii is ‘flied at the inner grooves of the bearings so as to lubricaie the crankshaft main journai sections.
| Main passage
ma
No. 1 main journal No.2 main journal’
" 'W W if 7
wFEem.uuo4
2. Crankpin iournal sections The oil which has been sent to each crankshaft main journal under a pressurized state will be sent to each crankpin joumal via the inner passages ofthe crankshaft. Consequently, the lubrication takes place not only for the crankshaft main journal sections, but also forthe crankpin journal sections. The inner passage of the crankshaft is connected from the N0. 1 main journal tothe No. 1 crankpin journal; from the No. 2 main journal to the No. 2 crankpin journal; irom the No. 3 main journal to the No. 3 crankpin journal; and from the No. 4 main journal to the No. 4 crankpin journal, respectively.
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3. Cylinder head seciion
The oil ted from the cylinder block under a pressurized condition is filled in the groove ot the camshaft bearing cap. Thus, the lubrication for the camshaft No. 1 journal takes place. Then, this oil travels upward around the camshaftjournal No. 1 and oil passage provided beside rocker shaft attaching bolts. thus being supplied forcibly into the inner passage of the rocker shaft. As a result, the oil flows through the oil passage leading to the rocker arms, thereby lubricating the rocker arm sliding sections. To distribute the lubrication oil properly over the sliding surfaces. grooves are provided at the oil outlet of the rocker arm sliding surfaces of the rocker shaft. For the lubrication for the No. 2 through No. 5 iournal sections of the camshaft, the oil from the inner passage of the rocker shaft travels downward around the bolts, in the opposite way as with the lubrication fro the No. 1 journal. Thus, the oil filled at the bearing cap groove willlubricate the aforesaid journal sections. As regards the lubrication for the cam lobe surfaces. the oil which has lubricated the camshaft journal and rocker arm sliding sections will drop from both sides ofthe lubricatingsections and it collects at the oil well provided at the cylinder head. Consequently, the camshaft lobe surfaces are lubricated by this oil bath lubrication which occurs each time the camshaft lobes dip into the oil well.
Valve rocker shaft No. 1 (Intake side)
Rocker arm No. 3
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1. OIL PUMP
The oil pump is a trochoid type. This oil pump mounte_d at the front section oi the engine is driven directly by the crankshaft. The oil pump is provided with a relief valve which starts functioning when the ei! pressure rises excessiveiy Moreover, the oil pump is equipped with an oil pressure switch which lights the warning lamp when the oil pressure drops abnormal- iy. The relief valve detects the oil pressure at a point before the oil passes through the oil filter, whereas the oil pressure switch delects the oil pressure at a point alter the Oil passes through the oil filter.
Oil pump specifications
Oil strainer
R Hem valve
Main journal.
item W | specificaiions
e of oil temperature 60°C
Flelief valve opening pressure (at time of 2000 rpm) kPa (kgf/cm?) I 441.3 (4.5) at time cf oil temperature 60°C
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OUTST TOIOT
OIL STRAINER
The oil strainer filtrates any dirt or foreign objects in the oil sucked from the oil pan.
The oil strainer bracket is supported at the joumai No. 3 section of the crankshaft.
OIL FILTER
The oil filter is a cartridge type which has a built-in bypass valve. This oil filter features a compact size and lightweight.
Item
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2. OIL COOLER
To prevent excessive temperature rise ofthe engine oil, an oil cooler is provided at the oil filter section so that an optimum temperature may be maintained at ail times. The oii cooier incorporates a bypass valve for the oil cooler.
3. OIL PRESSURE SWITCH
The oil pressure switch is mounted on the oil pump body.
Specifications
K
J WK Y Specifications I operating pressure ‘fkpagkgf/amz) | W19.s(o.2)
4. OIL PAN
An oil pan made of steel sheet is employed, The oil pan is provided with a baffle plate.
5. OIL LEVEL GAUGE
The oil levei gauge cf a saber type is located at the exhaust side ofthe engine.
y
Switch comact points
Baffle plate
$3
LOW level Full level
A
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LUBRICATION SYSTEM (_
6. ENGINE OIL
oi: capacity
hem | Oil capacity
Full level dm”
Recommended Oil API classification: SF, SG SAE: 10W-30
Engine Oil 8| Oil Iflltel' Change lniervals (Nnrmai Onnditinn)
Engine oil J Every 'Rm 'or évery 0.5 year on finer | Every 10.000 km
Engine oil J Every 'Rm 'or évery 0.5 year on finer | Every 10.000 km
7. OIL PRESSURE WARNING DEVICE
If the oil pressure detected by the oil pressure switch is lower than 19.6 kPa (0.2 kgf/crna), the warning lamp provided inside
the combination meter goes on. thus telling the driver of the abnormality.
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OIL PRESSURE CHECK
Oil quality check Check the oil for deterioraticn. ingress of water, discoloring or dilution. If oil quality is poor, change the oii. Use API grade SG or SF multigrade viscosity. fuel-efficient oii. (See page LU-8.)
Oil level check The oil level should be between the L and F levels on the dipstick. If the level is low, check to see if any oil leakage is present. Add oil to the F level. NOTE: v The amoum of oil between the [L] level and the [F]
equals to one liter.
Oil pressure check
(1) Remove the air cleaner and air cleaner hose assembiy.
(Only HD-E Engine) (2) Disconnect the connector of oil pressure switch.
(3) Remove the oi! pressure switch. NOTE:
Use a hexagonal long box wrench for the removal.
(4) Install the oii pressure gauge. NOTE:
o The pressure gauge is available as a SST.
SST: 09268-87701 -000
(5) Install the air cleaner and air cleaner hose assembly.
(Only HD-E Engine)
1 F jj 1
Low level Full level
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(6) Starting engine
Start the engine and warm it to the normal operating temperature. At idle Speed: More than 19.6 kPa (0.2 kgf/cmz) At 3000 rpm: 245.2 - 490.4 kPa (2.5 - 5.0 kgf/cmz)
If the measured value fails to conform to the specified value, check and repair the oil pump. (See page EM-146.) (7) StOp the engine. (8) Remove the air cleaner and air cleaner hose assembly.
(9) Remove the oi! pressure gauge. (10) Clean the threaded portion of the oil pressure switch. Wind sea! tape around the threaded portion. install the oii pressure switch in the oil pump. Tightening Torque: 11.8 - 19.6 N-m (1.2 - 2.0 kgf-m)
NOTE: v Use a hexagonal long box wrench for the installation. 0 The new oil pressure switch is coated with sealing
materials.
(11) Connect the connector of the oil pressure switch. (12) Install the air cleaner and air cleaner hose assembly. (13) Start the engine and check it for oil leakage.
Repair the leaky point if oil leakage exists.
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