Shanmeng: A Professional Manufacturer of Excavators and Loaders
388, Maintenance and Maintenance Schedule for the 388-II Model
Date:
2025-09-11
Maintenance and Service Schedule Maintenance & Care Plan
Warning WARNING
Maintenance must be performed by qualified personnel. Before carrying out any maintenance or servicing, ensure the machine is safely secured. Position the machine on a flat, stable surface. If lifting the loading arm is necessary during maintenance, always use safety support rods.
Conduct maintenance and care procedures with qualified engineers. Ensure the machine is safe before performing any maintenance or care tasks. Park the machine on level, solid ground. For maintenance and care, raise the loading arm and secure it using the safety bracket.
In addition to the daily maintenance tasks, this schedule has been developed based on the machine's operating hours. Please refer to the hourly chart to determine which maintenance activities need to be performed. Machines that have not undergone the prescribed maintenance procedures must not be used further. Any issues identified during maintenance should be addressed immediately and resolved as quickly as possible.
In addition to daily maintenance and care, this plan is prepared based on the machine’s operating hours. Use hour counters to determine which maintenance and care tasks need to be performed. Never operate the machine if the scheduled maintenance and care have not been completed. Any issues identified during maintenance should be addressed immediately.
Note: For detailed engine maintenance and servicing, please refer to the engine manual.
Note: For specific engine maintenance and servicing instructions, please refer to the engine manual.
The equivalent term for the number of working hours should specify whether services are provided per hour or by calendar interval, whichever comes first.
And the working time (hours), expressed as a numerical equivalent, should be billed either per hour or based on calendar intervals, whichever comes first.
50 Hours = Weekly 50 hours = every week
500 Hours = Six months 500 hours = Half a year
1000 Hours = Every year 1000 hours = Every year
2000 Hours = Every 2 Year 2000 hours = Every 2 years
Pre-start cold check: maintenance and servicing points, as well as fluid level inspection | |||||||
Engine | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Lubricant oil level | Check | ★ | ★ | | | | |
Lubricants and filters ④ | Replace | | | ★ | ★ | ★ | ★ |
Outer Core of the Air Filter ⑥ | Replace | | | | | ★ | ★ |
Air filter core | Replace | | | | | | ★ |
Fuel filter | Replace | | | ★ | ★ | ★ | ★ |
Fuel filter | Emissions | | ★ | | | | |
Coolant quality and oil level | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Fuel Sediment Cup | Emission Cleaning | | ★ | ★ | ★ | ★ | ★ |
The tension status of the fan belt | Check | | ★ | ★ | ★ | ★ | ★ |
Tightening degree of engine mounting bolts ③ | Check | | | ★ | ★ | ★ | ★ |
Radiator | Cleaning | | | | ★ | ★ | ★ |
All hose conditions | Check | | | ★ | ★ | ★ | ★ |
Transmission, drive axle, steering axle | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Transmission fluid level | Check | ★ | ★ | ★ | ★ | | |
Transmission fluid | Replace | | | | ★ | ★ | ★ |
Transmission filter | Replace | | | ★ | ★ | ★ | ★ |
Drive axle oil level (including the wheel rim) ① | Check | | | ★ | ★ | | |
Drive axle oil (including wheel rims) ⑨ | Replace | | | | | ★ | ★ |
Drive axle oil level - Traction Control Differential | Replace | | | | ★ | ★ | ★ |
Tire pressure / Condition | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Front wheel rim bearing ③ | Check | | | ★ | ★ | ★ | ★ |
Transmission filter | Cleaning | | | | | ★ | ★ |
Drive shaft | Tighten / Cleaning and washing | | | | | ★ | ★ |
Movement of the steering axle / Gasket | Check | | | ★ | ★ | ★ | ★ |
Steering axle pin and connecting rod | Lubrication | | | ★ | ★ | ★ | ★ |
Maebashi Spindle | Lubrication | ★ | ★ | ★ | ★ | ★ | ★ |
Hydraulic system | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Oil noodles ② | Check | ★ | ★ | ★ | ★ | ★ | |
Oil ③ | Sampling / Check | | | | | | ★ |
Filter | Replace | | | ★ | ★ | ★ | ★ |
Oil cylinder - Chrome Plating Conditions | Check | | | ★ | ★ | ★ | ★ |
Hydraulic oil cooler | Cleaning | | | | ★ | ★ | ★ |
Hydraulic oil filter screen | Cleaning | | | | | | ★ |
Hydraulic oil filler cap (with filter element) | Replace | | | | | | ★ |
Brake | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Brake system brake fluid level | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Brake system brake fluid ③ | Replace | | | | | | ★ |
Handbrake | Check / Adjustment | | | ★ | ★ | ★ | ★ |
Electrical System | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Battery electrolyte level (if applicable) | Check | | | | ★ | ★ | ★ |
Wire jacket / Line Connection | Check | | ★ | ★ | ★ | ★ | ★ |
Condition and tightness of the battery terminal connections | Check | | | ★ | ★ | ★ | ★ |
Body and cab | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
All pins and bushings | Check / Moisture addition | ★ | ★ | ★ | ★ | ★ | ★ |
Door and window hinges | Lubrication | | | | ★ | ★ | ★ |
All the ropes | Lubrication | | | | ★ | ★ | ★ |
Cabin heater filter ⑥ | Cleaning / Replace | | | | ★ | ★ | ★ |
Hydraulic clamp | Check / Adjustment | | | ★ | ★ | ★ | ★ |
Door - Accessories and door latches | Check | | | ★ | ★ | ★ | ★ |
Driver's seat operation | Check | | | ★ | ★ | ★ | ★ |
Windshield Washer Fluid Level | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Boom lock tightened | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Paint condition | Check | | | ★ | ★ | ★ | ★ |
Side-swing outrigger | Check / Adjustment | | ★ | ★ | ★ | ★ | ★ |
Complete machine ③ | Check / Cleaning | ★ | ★ | ★ | ★ | ★ | ★ |
Functional testing and final inspection | |||||||
Engine | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Total speed ③3 | Check / Adjustment | | | ★ | ★ | ★ | ★ |
Stall speed ③ | Check | | | ★ | ★ | ★ | ★ |
Maximum idle speed ③ | Check / Adjustment | | | ★ | ★ | ★ | ★ |
Excess (smoke) ventilation | Check | | ★ | ★ | ★ | ★ | ★ |
Exhaust system secured ③ | Check | | | ★ | ★ | ★ | ★ |
Intake system secured | Check | | | ★ | ★ | ★ | ★ |
Shanmen System and Control Circuit ③ | Check | | | ★ | ★ | ★ | ★ |
Transmission, drive axle, steering axle | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Turning state — Operation / Adjustment | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Four / Two-Wheel Drive Option | Check | | | ★ | ★ | ★ | ★ |
Wheel nut torque | Check | ★ | ★ | ★ | ★ | ★ | ★ |
Move forward / Reverse and shift gears | Check | | | ★ | ★ | ★ | ★ |
Powertrain | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Steering circuit pressure ③ | Check | | | ★ | ★ | ★ | ★ |
Transmission mainline pressure ③ | Check | | | | ★ | ★ | ★ |
Gearbox disengagement operation | Check | | | ★ | ★ | ★ | ★ |
Gear-shifting start-up operation | Check | | ★ | ★ | ★ | ★ | ★ |
Clutch engagement pressure | Check | | | ★ | ★ | ★ | ★ |
Hydraulic system | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Main Reset Valve Pressure ③ | | | | ★ | ★ | ★ | ★ |
Execute all action commands | | | ★ | ★ | ★ | ★ | ★ |
Brake System | | | | | | | |
Foot brake - Operation | | ★ | ★ | ★ | ★ | ★ | ★ |
Handbrake - Operation | | ★ | ★ | ★ | ★ | ★ | ★ |
Electrical System | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Start the motor | | | | ★ | ★ | ★ | ★ |
Generator - Output | | | | ★ | ★ | ★ | ★ |
All electrical operations | | ★ | ★ | ★ | ★ | ★ | ★ |
Parking Control | | ★ | ★ | ★ | ★ | ★ | ★ |
Body and cab | Operation | 10 Hours | 50 Hours | 100 Hours | 500 Hours | 1000 Hours | 2000 Hours |
Cusp and lateral tooth edges | | | | ★ | ★ | ★ | ★ |
Doors and windows - Accessories and Leaks | | | | ★ | ★ | ★ | ★ |
Seats / Safety Harness | | | | ★ | ★ | ★ | ★ |
Note: For first-time users only 100 Hourly maintenance and upkeep will be performed by the dealer.
Note: For the first 100 hours of maintenance and care, only performed by authorized agents .
① Every 50 Check hourly for leaks, and if a leak is detected, also verify the oil level.
Check for leaks every 50 hours. Inspect the level if a leak occurs.
② Inspection fluid Press When the system oil level is at the proper height, ensure proper loading. Battle And at the excavator's location At Driving position.
Keep the loading bucket and excavator in the driving position for hydraulic inspection. c System level.
③ This task can only be performed by qualified professionals. Come Proceed.
Only qualified professionals.
④ If working conditions are harsh, per 250 The engine oil and filter need to be changed every few hours.
Change the engine lubricant and filter every 250 hours under harsh operating conditions.
⑤ Perform a general venting of the machine's various components. Expose Inspect components such as the hydraulic system, engine (coolant, fuel, and lubricant), transmission, brakes, and drive cups. If any leaks are detected, locate the source. Leak Inspect and repair the source of the issue. After repairs are completed, make sure to refill with the recommended fluids. For minor damage—such as paintwork, foot pedals, or worn rubber pads—ensure they’re repaired according to specifications. If there is… Not Involving repairs and refueling Oil For information regarding liquids, please consult the agent.
Check all machine components for leaks, including the hydraulic system, engine (coolant, fuel oil, and lubricant), gearbox, brakes, and drive axle, etc. c In case of leakage, identify the source and make repairs.
Refill with the recommended oil after repair. Repair common damages, such as paint coating, foot pedal, and worn rubber gaskets, etc., as required. For any repair issues or oil-filling procedures not described in this manual, please consult the authorized dealers.
⑥ If the work environment is dusty, the replacement interval should be shorter.
In case of excessive dust in the working environment, replace more frequently.
⑦ The drive axle and drive shaft are pre-lubricated with high-performance lubricant before leaving the factory. If standard lubricant is used during maintenance, then every 50 Lubricate once per hour. Please consult the dealer for details.
The drive axle is lubricated at the factory using a high-performance lubricant. For standard lubricant, Care. Lubricate t Every 50 hours. Consult the agents.
⑧ After the transmission overhaul, new oil should be used to Worker Operate at the specified temperature before replacing it, to remove contaminants generated during the overhaul process. If excessive contamination occurs due to a malfunction, continue using it 100 Change the oil and filter again in a few hours.
After gearbox overhaul. F Fill with new oil and keep it running at operating temperature. A Then replace the oil to remove waste generated during the overhaul. If excessive waste occurs due to a fault, replace the engine oil and filter element after 100 hours of operation.
⑨ After wheel hub repair, the unit should be run with fresh oil at operating temperature before the old oil is drained, to remove any contaminants generated during the repair process. 1000 Change the oil again after a few hours to remove contaminants generated during the break-in period—especially after installing new brake pads.
After overhauling the rim, top up with fresh oil and allow the system to run at operating temperature. Then, replace the oil to eliminate contaminants generated during the overhaul process. Finally, change the engine oil after 1,000 hours of operation to remove residues accumulated during the running-in period, particularly after new brake shoes have been installed.
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Shanmon Engineering Machinery Co., Ltd.
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No. 13777, Nanhuan Road, Qingzhou City, Shandong Province, China
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