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我局五处于１９８４年１２月投入使用的３台日产Ｄ１５５Ａ—１型推土机于１９９０年开始相继出现发动机启动以后需经过１０几分钟甚至半个小时以上才能行走的故障。当时更换变速泵或变速泵油封后即恢复了正常。至１９９５年起又开始出现同类故障，更换变速泵后不起任何作用，
The three Nissan D155A-1 bulldozers that were put into use in December 1984 in the Bureau of the 5th Division of the Chinese Army began to fail in 1990 after 10 minutes or even more than half an hour after the start of the engine. After replacing the variable speed pump or the variable speed pump oil seal, it returned to normal. Since 1995, the same type of fault has appeared again, and no effect has been achieved after replacing the variable speed pump.