Jordan would like to see the United States issue a - bold, clear" initiative to help bring about a negotiated Middle East settlement but it fears that the Camp David summit meeting may pressure Washington into the wrong kind of move.

High Jordanian policymakers who outlined Amman's views on the coming summit meeting yesterday said they saw the involvement of President Carter's personal prestige as heralding a new commitment to push U.S. proposals on the shape of an Arab-Israeli accord.

U.S. envoy Alfred Athrton, in his visit here last week, stressed a strong Carter involvement in current peace-seeking activities, including the Sept. 5 summit meeting which is to bring together U.S., Egyptian and Israeli leaders.

Yet, Jordanian officials are fearful that "the dynamics of the situation - where Sadat is increasingly isolated with Israel and the United States - may make the option of a separate peace with Israel his only one."

The sources here said, "We are really seriously worried and concerned," although they stressed that Sadat has so far resisted the temptation of a separate deal and has stuck to the Arab demands for a full Israeli territorial withdrawal and Palestianian self-determination in his negotiations.

Yet American determination to help bridge the Egyptian-Israeli gap may cause it to bring pressure on Sadat to compromise those two basic Arab positions, the sources said.

To prevent that, the Jordanians have been urging the Arab states that have denounced Sadat's peace initiative to come up with a new consensus within which he could honorably find a place.

This was the thinking behind Saudi Arabi's crown Prince Fahd's tour of Arab states two weeks ago. It was coordinated with Jordanian efforts "to crystallize a new solidarity in the Arab world" that avoids what Amman calls "a reckless and negative policy that would result from an irrational reaction to the Sadat initiative."

Jordanian policymakers feel the time is right for the United States to come out with "a bold, clear and unequivocally consistent policy on a fair Middle East settlement that would carry a great deal of weight in Israel and particularly to mobilize American public opinion." It has been the lack of such a clear American position, they say, that has often allowed Israel to avoid a commitment to a balanced peace settlement based on such principles as those in U.N. Resolution 242. They say they are disappointed in the "equivocating" American posture.

The Jordanian sources also said that Egypt had not consulted Jordan on Sadat's proposals to have Jordan administer the West Bank for a five-year period leading up to a point when the Palestinians would determine their own future.

"We are not enthusiastic about the idea of ruling the West bank and we do not now envisage a transitional Jordanian role in the West Bank, and we will become involved there only if we are asked to do so by the Arabs in the case where our involvement is seen as the only way to regain the occupied territories," the Jordanians say.

The Jordanians add, however, that "such an eventuality would require a new Arab consensus . . . and we would agree to this only on the clear understanding that self-determination for the Palestinians is the basis for any negotiations."

They add that Jordan would obviously feel that a "reunion" of both banks of the Jordan River is the "Healthiest" approach, but they add, this has to be result of an explicit expression of consent by the Palestinians."