WORKSHOP MANUAL FOR RT-50R / RT-70 R / RD / RT-70 F TAMPING RAMMER April 1.
CONTENTS 1. 2. 3. 4. For safety on maintenance work Points to remember before work Inspection procedures Disassembly and re-assembly of engine and clutch 4-1 Disassembly procedures 4-2 Re-assembly procedures 5. Disassembly and re-assembly of crank-case 5-1 Disassembly procedures 5-2 Re-assembly procedures 6. Disassembly and re-assembly of lower cylinder and foot 6-1 Disassembly and re-assembly of RT-50R 6-2 Disassembly and re-assembly of RT-70R(D)/70F 7.
1. For safety on maintenance work Be sure to stop the engine and wait until it has been cooled down to carry out inspection and maintenance. You may be suffered an unexpected burn if you try to start the maintenance work while engine is still hot. In order to secure safety, wear clothes suitable for the work, protection cap, and safety shoes when working on maintenance. Do not wear clothes stained with oil as they may catch fire.
3. Inspection procedures 1. Visual inspection for: 1. Mounting of each equipment 2. Missing component 3. Damaged part of machine itself 4. Crack and/or distortion of rubber cushion 5. Tightness and coming off of bolts and nuts 6. Lubrication Machine lubricant (RO#100: multi-purpose general use or SAE10W30: engine oil) RT-50R ---------------0.6 litters RT-70R(D), 70F----0.9 litters Engine lubricant (SAE10W-30: class SE or SF) RT-50R ---------------0.3 litters RT-70R(D), 70F----0.4 litters 7.
4. Disassembly and re-assembly of engine and clutch 4 - 1 Disassembly procedures 1. Remove the fuel pipe and the throttle wire. Note: Remove the fuel pipe after the fuel cock has been closed. 2. Remove the engine support (50R:53, 70R/RD:59, 70F:52). 3. Remove engine mounting bolts or nuts to remove the engine. 4. Remove the nut(50R:42, 70R/D:47, 70F:49) to remove the clutch assy with the tool for pulling Clutch puller : 1003745 out clutch (option). 4 - 2 Re-assembly procedures 1.
5. Disassembly and re-assembly of crankcase 5 - 1 Disassembly procedures 1. Remove the engine assembly by following the steps 1 to 3, section 4-1. 2. Drain lubricant in the machine out of the drain plug. 3. Remove the bolts fastening the crankcase and the upper cylinder to separate them. 4. The crankcase assembly can be come off by extracting the rod pin while the nylon plug in the crank rod pin mounting is being pushed. 5.
6. Disassembly and re-assembly of lower cylinder and foot 6-1 Disassembly and re-assembly of RT-50R Disassembly procedures 1. Remove the drain plug to discharge lubricant. 2. Remove the nylon nuts (40) to remove the foot plate (33). 3. Remove 2 bolts (marked “A”) out of 8 bolts on the back of foot block (refer to Fig.1). 4. Screw the 2 threaded bars (M8 x 190mm long) in the unscrewed holes and insert the collar (15mm O.D. x 11mm I.D.
6-2 Disassembly and re-assembly of RT-70R/D, 70F Disassembly procedures 1. Remove the drain plug to discharge lubricant. 2. Remove the nylon nuts (45) to remove the foot assembly (36). 3. Remove the bolts (6 pieces of M8 hexagon socket head bolts and 4 pieces of M10 bolts) other than 2 hexagon socket head bolts (marked “A”) to remove the foot block (30) and the protection pipe assembly (20) (refer to Fig.1). 4.
7. Replacement of bellows 7-1 Disassembly procedure 1. Carry out disassembly by following steps 1 to 4, section 5 to separate the crank case assembly and the upper cylinder (5). 2. Removal of the band (12) on upper side allows the upper cylinder (5) to be extracted upward. 3. Removal of the band (12) on lower side slows the bellows to be extracted. 7-2 Re-assembly procedures 1.
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