What oil should be added to the transfer case of a pump truck? Comprehensive analysis of key points in oil selection and maintenance
As an important piece of equipment in engineering construction, the lubrication and maintenance of the transfer case of the pump truck directly affects the equipment life and operating efficiency. Recently, there has been a lot of discussion on the maintenance of pump trucks across the Internet, especially the issue of oil selection has attracted much attention. This article will combine the technical discussions and industry data of the past 10 days to provide you with detailed answers to the oil usage specifications of the pump truck transfer case.
1. Function and lubrication requirements of pump truck transfer case
The transfer case is the core component of the power distribution of the pump truck and is responsible for transmitting the engine power to the pumping system and chassis system. Its working characteristics include: high load, multi-gear meshing, large temperature changes, etc., so it has special requirements for lubricating oil:
| Performance requirements | Technical parameters |
|---|---|
| Viscosity grade | SAE 85W-90 or 80W-90 |
| Base oil type | Synthetic oil/mineral oil (GL-5 grade) |
| Extreme pressure performance | Timken OK load value ≥ 45 pounds |
| Anti-emulsification | 40-37-3mL (24 hours test) |
2. Comparative analysis of mainstream brand oil products
Based on recent e-commerce platform sales data and industry forum discussions, the following recommended oil products are compiled:
| brand | Model | Applicable temperature | Oil change interval | average market price |
|---|---|---|---|---|
| Shell | Spirax S6 GXME 85W-90 | -30℃~50℃ | 500 hours | ￥180/L |
| Mobil | Mobilube HD 80W-90 | -25℃~45℃ | 450 hours | ￥165/L |
| Great Wall | GL-5 85W-90 | -20℃~40℃ | 400 hours | ￥120/L |
| Kunlun | Tianhong GL-5 85W-140 | -15℃~50℃ | 600 hours | ￥135/L |
3. Suggestions on oil selection under different working conditions
Based on recent hot issues reported from construction sites, the following targeted suggestions are given:
| Working condition characteristics | Recommended oil | Additional information |
|---|---|---|
| Low temperature operations in winter | Synthetic 75W-90 | Need to confirm that the transfer case supports low viscosity oil |
| Continuous pumping operations | GL-5+ grade fully synthetic oil | It is recommended to shorten the oil change interval by 20% |
| plateau area | High antioxidant oil | Pay attention to check the oil level expansion |
| humid environment | Enhanced anti-emulsifying oil | Oil-water separation needs to be checked weekly |
4. Summary of recent industry hot issues
By analyzing the Baidu Index and WeChat Index in the past 10 days, the following high-frequency questions have been sorted out:
| hot issues | Professional answers |
|---|---|
| Can hydraulic oil be used instead? | Absolutely prohibited, insufficient viscosity will cause gear wear |
| Risks of mixing different brands of oil | Sediment may occur, it is recommended to rinse thoroughly |
| What happens if there is too much oil? | Cause oil seal leakage and increase operating resistance |
| How to tell if oil has deteriorated? | The color turns black, there are metal shavings, and the viscosity decreases |
5. Three major misunderstandings about transfer case maintenance
Based on the popular video content of the #pump truck maintenance topic on Douyin, we summarized the most concerned maintenance misunderstandings:
1.Misunderstanding 1: Only look at the price but not the parameters- Recently, the transfer case was scrapped due to the use of non-standard oil at a construction site, and the repair cost reached 80,000 yuan.
2.Misunderstanding 2: Do not replace if used beyond the expiration date- Big data shows that 60% of transfer case failures are related to expired oil
3.Misunderstanding 3: Ignoring the oil level check- The ideal oil level should be at 2/3 of the oil window. Too high or too low will affect the lubrication effect.
6. The latest industry specifications in 2024
According to the new regulations issued by the China Construction Machinery Industry Association in April, new requirements are put forward for the maintenance of pump truck transfer cases:
| Project | new standard | old standard |
|---|---|---|
| Oil testing | Sampling and testing every 250 hours | Visual inspection only |
| Waste oil treatment | Must be professionally recycled | No explicit requirements |
| Accessory adaptation | OEM certification required | Allow compatible products |
Summary: It is recommended to use GL-5 grade 85W-90 gear oil for the pump truck transfer case. The specific brand selection needs to consider the working conditions and manufacturer's recommendations. Regular maintenance and correct use of oil can extend the life of the transfer case by more than 30%. It is recommended to establish a complete lubrication management file. If you need further technical consultation, you can pay attention to the latest results of the "Engineering Machinery Lubrication Technology Seminar" recently held in Changsha.
check the details
check the details
en
