SM83.70-D-0001A | Retrofitting fresh air intake hose | 16.2.12 |
MODEL 901.0 /3 /4, 902.0 /3 /4, 903.0 /3 /4, 904.0 /3 /4 with CODE (H12) Auxiliary heater (warm water)
Modification notes
D83.70-0076-01
D83.70-0208-01
D83.70-0209-01
Operation no. of operation texts or standard texts and flat rates
Division | Op. no. | Operation text |
N | 023732 | Retrofitting fresh air intake for stationary heater (Code H12) ACCOUNTING NO. 83 530 01 26 work units/2.2 h |
| Removing, installing | ||
Danger | Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices | No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards. Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground. Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers. | |
1 | Remove battery | ||
2 | Remove battery tray | ||
3 | Pull cap off MSA control module connector | Models 901.4, 902.4, 903.4, 903.4 only | |
4 | Remove heater unit exhaust system | ||
5 | Disconnect connector of heater unit (9) | ||
6 | Drill out existing holes (15) in the right-hand retaining land of the battery tray to 8 mm dia. | ||
7 | Deburr holes and remove drilling chips | ||
8 | Treat holes with corrosion protection | ||
9 | Clip the two hose brackets (16) for the fresh air intake hose into the holes | ||
10 | Guide the fresh air intake hose (17) through under the MSA engine control module (19) | Models 901.4, 902.4, 903.4, 903.4 only | |
11 | Insert 90° elbow coupling into fresh air intake hose and secure with hose clamp | ||
12 | Raise heater unit, push elbow coupling onto the fresh air intake tube of the heater unit and secure with hose clamp | Push elbow coupling on as far as the stop as the clearance to the end pointed plate is very small. Pay attention to clearance of hose clamps. | |
13 | Screw plastic end fitting (18) onto the end of the fresh air intake hose (17) | ||
14 | Clip fresh air intake hose (17) into the two hose brackets (16) | Route fresh air intake hose so that the end of the hose points downwards | |
15 | Install heater unit exhaust system | ||
16 | Mount cap of MSA control module connector | Models 901.4, 902.4, 903.4, 903.4 only | |
17 | Install battery tray | Tie electric cable to battery tray using a cable strap | |
18 | Install battery |
Parts ordering notes
Part no. | Designation | Quantity |
A 000 830 2553 | Parts kit, fresh air intake hose | 1 |
A 667 429 0340 | Hose bracket | 2 |
A 002 997 2490 | Cable strap | 1 |
N 916026 020001 | Clamp | 2 |
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